How to Calculate Percentage

If you want to be quick here is a percentage calculator to give you the answer. If you just want to know how it's done scroll down the page.

What is % of ?

is what percent of ?

What is the percentage increase/decrease fromto ?

What is + %

What is - %

How to do it yourself

It's easy enough to calculate with percentages by yourself. We will go through each calculator above in turn using an example.


What is..?

What is 74% of 125?

First divide 74 by 100 = 0.74

Then multiply this by 125

0.74 x 125 = 92.5


Is what percent of..?

325 is what percent of 856?

325 856 = 0.3797 x 100 = 37.97


Increase/decrease

What is the percentage increase from 452 to 658?

658 - 452 = 206 (second number minus first number to find the difference between them.)

206 452 = 0.4558 x 100 = 45.58% (answer divided by first number to find percentage change and multiplied by 100 to make an actual percentage.)


Add ... percent

This one is useful for adding sales tax etc.

What is 85 + 15%?

15 100 = 0.15(Divide the 15% by 100 to decimalise.)

85 x (1 + 0.15) = 97.75 (add 1 to the percentage as you want the whole plus the percentage increase and then multiply by the original number)


Minus ... percent

This one is useful if the sales tax is included and you want to find the exclusive amount.

What is 85 - 15%?

15 100 = 0.15(Divide the 15% by 100 to decimalise.)

85 x 0.15 = 12.75(The number multiplied by the percent.)

85 - 12.75 = 72.25 (The original number - the 15 percent.)