Calculate percentages. Our calculator helps you work out percentages easily.
This calculator helps you determine what percentage one value is of another, how much a value is of a certain percentage, and calculate percentage increase/decrease. The formula used for each calculation is also provided to help you understand how to calculate percentages yourself.
Find X percent of Y
Formula to find X percent of Y (e.g., 20% of 350):
% of
Find out how many percent X is of Y
Formula to find what percentage X is of Y (e.g., what percentage 30 is of 200):
is how many % of
Calculate Percentage Change
Formula to calculate percentage change (increase or decrease) (e.g., from 50 to 60):
Percentage change from to
How to Calculate Percentages on a Calculator
To find a percentage on a calculator, simply divide the percentage value by 100, then multiply by the number you want the percentage of.
For example, to find 30% of 200:
30 / 100 = 0.3
Then:0.3 × 200 = 60
Instead of dividing the percentage by 100 first, you can also move the decimal point two places to the left.
In the example above, moving the decimal in 30.0 gives you 0.300, which is the same as 0.3.