Percentage Calculator

Quickly and easily calculate the percentages of two numbers.

To work out the percentages between two numbers you'll first need to actually add some numbers! Enter your numbers in the fields below and watch as the Nine Planets Percentage Calculator (patent pending) works out the answer for you.

What is % of
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What is the % change from to

We built this percentage calculator to be a very simple, easy-to-use tool for teachers, parents, students, or anybody wanting to quickly work out the percentage of, or difference between, two numbers.

If you want to view the explanation for how a certain percentage is calculated, just click the icon next to the answer. Every calculation is fully broken down and explained for you so that you can learn the math behind percentages.

The calculation is pretty simple, but if you have any problems or get any errors, please contact us.