Increasing numbers in excel

5 Ways to Increment the Cell Values in Excel

Microsoft Excel is a powerful tool that is widely used by accountants and finance people to make spreadsheets, reports, sales record, summaries and etc. Regardless of the complexity of task, ‘Serial Number’ is a column which is included in almost all types of worksheets. Sequential serial numbers are usually incremented by 1. None of us like filling this column manually by typing 1, 2, 3 … 1000. How relaxing is the idea of auto-incrementing the serial number values is. Today, we will share some unique ways of adding serial numbers in your excel workbook.

1- Use Simple Drag:

Let us start with the most simple and common way of filling up the column. In the serial number column:

• Type the initial and second value in the first and second cell, respectively.
• Select both the cells and they will be highlighted.
• Move your cursor to the bottom-right of the cells (a plus sign will appear).
• Drag it down till the end of your column.
• All the values will be filled in a sequence automatically.

2- Auto-increment using User-Defined Formula:

You may also be familiar with another simple technique of incrementing serial numbers. We type a user defined formula that takes the previous cell’s address and add 1 to it.

Move the cursor down in the column and press Ctrl + D to copy the formula with appropriate reference cells. You may add any value instead of ‘1’ to generate the next number.

3- Auto – Increment using CountA Function:

We are done with the simple and popular ways of filling up the serial number column. We can also perform the same task using the built-in functions. CountA is a function that counts the number of cells in a range that are not empty. The syntax is very simple. Just type CountA, mention the range of cells and it will calculate the number of items. In our example, we are counting the number of products being entered by the user. B2 will be the starting cell address for the range of Products. The last value varies with the position of your cursor. It is one less than your current cell address. We have typed the following formula in the serial number cell that corresponds with the first product.

‘$’ sign freezes the cell value. i.e., starting address of the range will now remain the ‘B2’. If you remove the ‘$’ sign, the entire trick fails as it would not be able to locate the starting point of range correctly.

You may easily observe the loophole of using CountA. It inserts the serial numbers corresponding to empty cells also. So, we can add a condition that makes sure that serial number is filled only w.r.t some product else it is left blank. We modified the formula as:

4- Use If with the Library functions:

You might have noticed that above mentioned practices fill up the column when you insert the formula for incrementing the values. They do not check whether there is some data associated with the serial number or not. Mostly, we want to assign a serial number as soon as we input any data. We can apply a trick to assign serial numbers using the ‘if’ condition which will insert serial number when data is inputted. This flawless approach will automatically adjust the serial numbers when you delete any item from anywhere in the list.

We will calculate the difference between total number of filled and empty cells in a specified range. Add ‘1’ to this difference to obtain the current serial number. In the serial number column, copy this formula:

=if (B3=””,””, COUNTA ($A$2:A2) +1-COUNTBLANK ($A$2:A2))

B3 is the initial cell address for the Products column.

$A$2 is the cell address of Serial Number column.

CountA is a function that counts the number of cells in a range that are not empty.

CountBlank is a function that counts the number of empty cells in a specified range of cells.

This formula can be taken as a different flavor of the previous formula.

5- Increment when New Record Begins:

While working with records we came across data sets where we need to store different attributes that relate to a single object or item. For example, if you are storing the record of any home product, say telephone, it will have name, model number, color and price. In such cases, serial numbers should be incremented when a new record appears. We can use any one of the attributes to specify the beginning of a new record. The selected attribute will be used in the logical test of ‘If Condition’. In our example, we are using incrementing the serial number when ‘Name’ appears in the ‘Products’ column.

So, this was all for today. We hope that you find these tricks handy and helpful. Stay tuned to master your skills at excel!

Источник

Calculate Percentage Change in Excel (% Increase/Decrease Formula)

When working with data in Excel, calculating the percentage change is a common task.

Whether you working with professional sales data, resource management, project management, or personal data, knowing how to calculate percentage change would help you make better decisions and do better data analysis in Excel.

It’s really easy, thanks to amazing MS Excel features and functions.

In this tutorial, I will show you how to calculate percentage change in Excel (i.e., percentage increase or decrease over the given time period).

So let’s get started!

This Tutorial Covers:

Calculate Percentage Change Between Two Values (Easy Formula)

The most common scenario where you have to calculate percentage change is when you have two values, and you need to find out how much change has happened from one value to the other.

For example, if the price of an item increases from $60 to $80, this could be a scenario where you have to calculate how much increase in percentage happened in this case.

Let’s have a look at examples.

Percentage Increase

Suppose I have the data set as shown below where I have the old price of an item in cell A2 and the new price in cell B2.

The formula to calculate the percentage increase would be:

Below is the formula to calculate the price percentage increase in Excel:

There’s a possibility that you may get the resulting value in decimals (the value would be correct, but need the right format).

To convert this decimal into a percentage value, select the cell that has the value and then click on the percentage icon (%) in the Number group in the Home tab of the Excel ribbon.

In case you want to increase or decrease the number of digits after the decimal, use the Increase/Decrease decimal icons that are next to the percentage icon.

Important: It is important to note that I have kept the calculation to find out the change in new end old price in brackets. This is important because I first want to calculate the difference and then want to divide it by the original price. in case you don’t put these in brackets, the formula will first divide and then subtract (following the order of precedence of operators)

Percentage Decrease

Calculating a percentage decrease works the same way as a percentage increase.

Suppose you have the below two values where the new price is lower than the old price.

In this case, you can use the below formula to calculate the percentage decrease:

Since we are calculating the percentage decrease, we calculate the difference between the old and the new price and then divide that value from the old price.

Calculate the Value After Percentage Increase/Decrease

Suppose you have a data set as shown below, where I have some values in column A and the percentage change values in column B.

Below is the formula you can use to calculate the final value that would be after incorporating the percentage change in column B:

You need to copy and paste this formula for all the cells in Column C.

In the above formula, I first calculate the overall percentage that needs to be multiplied with the value. to do that, I add the percentage value to 1 (within brackets).

And this final value is then multiplied by the values in column A to get the result.

As you can see, it would work for both percentage increase and percentage decrease.

In case you’re using Excel with Microsoft 365 subscription, you can use the below formula (and you don’t need to worry about copy-pasting the formula:

Increase/Decrease an Entire Column with Specific Percentage Value

Suppose you have a data set as shown below where I have the old values in column A and I want the new values column to be 10% higher than the old values.

This essentially means that I want to increment all the values in Column A by 10%.

You can use the below formula to do this:

The above formula simply multiplies the old value by 110%, which would end up giving you a value that is 10% higher.

Similarly, if you want to decrease the entire column by 10%, you can use the below formula:

Remember that you need to copy and paste this formula for the entire column.

In case you have the value (by which you want to increase or decrease the entire column) in a cell, you can use the cell reference instead of hardcoding it into the formula.

For example, if I have the percentage value in cell D2, I can use the below formula to get the new value after the percentage change:

The benefit of having the percentage change value in a separate cell is that in case you have to change the calculation by changing this value, you just need to do that in one cell. Since all the formulas are linked to the cell, the formulas would automatically update.

Percentage Change in Excel with Zero

While calculating percentage change in excel is quite easy, you will likely face some challenges when there is a zero involved in the calculation.

For example, if your old value is zero and your new value is 100, what do you think is the percentage increase.

If you use the formulas we have used so far, you will have the below formula:

But you can’t divide a number by zero in math. so if you try and do this, Excel will give you a division error (#DIV/0!)

This is not an Excel problem, rather it’s a math problem.

In such cases, a commonly accepted solution is to consider the percentage change as 100% (as the new value has grown by 100% starting from zero).

Now, what if you had the opposite.

What if you have a value that goes from 100 to 0, and you want to calculate the percentage change.

Thankfully, in this case, you can.

The formula would be:

This will give you 100%, which is the correct answer.

So to put it in simple terms, if you calculating percentage change and there is a 0 involved (be it as the new value or the old value), the change would be 100%

Percentage Change With Negative Numbers

If you have negative numbers involved and you want to calculate the percentage change, things get a bit tricky.

With negative numbers, there could be the following two cases:

1. Both the values are negative
2. One of the values is negative and the Other one is Positive

Let’s go through this one by one!

Both the Values are Negative

Suppose you have a dataset as shown below where both the values are negative.

I want to find out what’s the change in percentage when values change from -10 to -50

The good news is that if both the values are negative, you can simply go ahead and use the same logic and formula you use with positive numbers.

So below is the formula that will give the right result:

In case both the numbers have the same sign (positive or negative), the math takes care of it.

One Value is Positive and One is Negative

In this scenario, there are two possibilities:

1. Old value is positive and new value is negative
2. Old value is negative and new value is positive

Let’s look at the first scenario!

Old Value is Positive and New Value is Negative

If the old value is positive, thankfully the math works and you can use the regular percentage formula in Excel.

Suppose you have the dataset as shown below and you want to calculate the percentage change between these values:

The below formula will work:

As you can see, since the new value is negative, this means that there is a decline from the old value, so the result would be a negative percentage change.

So all’s good here!

Now let’s look at the other scenario.

Old Value is Negative and New Value is Positive

This one needs one minor change.

Suppose you’re calculating the change where the old value is -10 and the new value is 10.

If we use the same formulas as before, we will get -200% (which is incorrect as the value change has been positive).

This happens since the denominator in our example is negative. So while the value change is positive, the denominator makes the final result a negative percentage change.

Here is the fix – make the denominator positive.

And here is the new formula you can use in case you have negative values involved:

The ABS function gives the absolute value, so negative values are automatically changes to positive.

So these are some methods that you can use to calculate percentage change in Excel. I have also covered the scenarios where you need to calculate percent change when one of the values could be 0 or negative.

I hope you found this tutorial useful!

Other Excel tutorials you may also like:

Источник

Microsoft Excel is a powerful tool that is widely used by accountants and finance people to make spreadsheets, reports, sales record, summaries and etc. Regardless of the complexity of task, ‘Serial Number’ is a column which is included in almost all types of worksheets. Sequential serial numbers are usually incremented by 1. None of us like filling this column manually by typing 1, 2, 3 … 1000.  How relaxing is the idea of auto-incrementing the serial number values is. Today, we will share some unique ways of adding serial numbers in your excel workbook.

1-    Use Simple Drag:

Let us start with the most simple and common way of filling up the column. In the serial number column:

• Type the initial and second value in the first and second cell, respectively.
• Select both the cells and they will be highlighted.
• Move your cursor to the bottom-right of the cells (a plus sign will appear).
• Drag it down till the end of your column.
• All the values will be filled in a sequence automatically.

2-    Auto-increment using User-Defined Formula:

You may also be familiar with another simple technique of incrementing serial numbers. We type a user defined formula that takes the previous cell’s address and add 1 to it.

A2=A1+1

Move the cursor down in the column and press Ctrl + D to copy the formula with appropriate reference cells. You may add any value instead of ‘1’ to generate the next number.

3-    Auto – Increment using CountA Function:

We are done with the simple and popular ways of filling up the serial number column. We can also perform the same task using the built-in functions. CountA is a function that counts the number of cells in a range that are not empty. The syntax is very simple. Just type CountA, mention the range of cells and it will calculate the number of items.  In our example, we are counting the number of products being entered by the user. B2 will be the starting cell address for the range of Products. The last value varies with the position of your cursor. It is one less than your current cell address. We have typed the following formula in the serial number cell that corresponds with the first product.

COUNTA($B$2:B3)

‘$’ sign freezes the cell value. i.e., starting address of the range will now remain the ‘B2’. If you remove the ‘$’ sign, the entire trick fails as it would not be able to locate the starting point of range correctly.

You may easily observe the loophole of using CountA. It inserts the serial numbers corresponding to empty cells also. So, we can add a condition that makes sure that serial number is filled only w.r.t some product else it is left blank. We modified the formula as:

=IF(B3=””,””,COUNTA($B$3:B3))

4-    Use If with the Library functions:

You might have noticed that above mentioned practices fill up the column when you insert the formula for incrementing the values. They do not check whether there is some data associated with the serial number or not. Mostly, we want to assign a serial number as soon as we input any data. We can apply a trick to assign serial numbers using the ‘if’ condition which will insert serial number when data is inputted. This flawless approach will automatically adjust the serial numbers when you delete any item from anywhere in the list.

We will calculate the difference between total number of filled and empty cells in a specified range. Add ‘1’ to this difference to obtain the current serial number. In the serial number column, copy this formula:

=if (B3=””,””, COUNTA ($A$2:A2) +1-COUNTBLANK ($A$2:A2))

Where,

B3 is the initial cell address for the Products column.

$A$2 is the cell address of Serial Number column.

CountA is a function that counts the number of cells in a range that are not empty.

CountBlank is a function that counts the number of empty cells in a specified range of cells.

This formula can be taken as a different flavor of the previous formula.

5-    Increment when New Record Begins:

While working with records we came across data sets where we need to store different attributes that relate to a single object or item. For example, if you are storing the record of any home product, say telephone, it will have name, model number, color and price. In such cases, serial numbers should be incremented when a new record appears. We can use any one of the attributes to specify the beginning of a new record. The selected attribute will be used in the logical test of ‘If Condition’. In our example, we are using incrementing the serial number when ‘Name’ appears in the ‘Products’ column.

=IF(C4=”name”, COUNTA($B$2:B3)+1-COUNTBLANK($B$2:B3),””)

So, this was all for today. We hope that you find these tricks handy and helpful. Stay tuned to master your skills at excel!

Explanation 

x=old*(1+percentage)
x=70*(1+10%)
x=70*1.10
x=77.00

=C5*(1+D5)
=70*(1+0.1)
=70*1.10
=77.00

=C5*(1+D5)
=70*(1+-0.1)
=70*0.9
=63.00