If you want to calculate a percentage increase things get a little more interesting.

## Percentage Increase Calculator

To calculate a percentage increase you need to calculate the increase, divide the increase by the original value and then multiply that amount by 100.

With the figures above you would do the following:

120 - 100 = 20 Then: 20 / 100 = 0.2 Then: 0.2 x 100 = 20 - showing a 20% increase in the amount.

With the figures above you would do the following:

120 - 100 = 20 Then: 20 / 100 = 0.2 Then: 0.2 x 100 = 20 - showing a 20% increase in the amount.