# Calculate percentage increase

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With Excel, it is very easy to calculate the percentage increase between two values, and without special functions required

## When is it helpful to calculate the percentage of increase?

You have the following document where you have the total sales per month. How to calculate the increase or decrease from one month to the next?

## Percentage Calculation method

### First, calculate the subtraction

The first thing to do is the difference between 2 consecutive months. The formula is very simple

=B3-B2

And, of course, you copy this formula for the other cells.

### Second, divide the substation by the next month

To calculate the rate of increase, we will now reuse the result of the subtraction and divide it by the sales amount of the previous month.

=C3/B2

## Change the format number to percentage

Now, you must change the format number to percentage from the Home ribbon.

And copy the formula for the rest of your document

Between January and February, the increase is up to 31.9% (great result 😃😍)

## Write the formula in a single cell

In mathematics, addition and subtraction do not have the same priority as multiplication and division. Thus, perform the subtraction before the division.

To get around this problem, we will put the subtraction in parentheses.

=(B3-B2)/B2

## Conditional formatting with icon

To highlight the increase and decrease, it's a good idea to insert icons with conditional formatting.

### MICROSOFT MVP 