Percentage Calculator
Calculate percentages three ways: what is X% of Y, X is what percent of Y, and percentage increase or decrease. Free and instant.
The percentage to take.
%
The number to take the percentage of.
15% of 200 is 30.
Frequently asked questions
How do I find what percent one number is of another?
Use the 'X is what % of Y' mode. The result is (X / Y) x 100. For example, 30 is 15% of 200.
How is percentage increase or decrease calculated?
Percentage change = ((new - old) / |old|) x 100. A positive result is an increase; a negative result is a decrease.
Related tools
Read the guide: How to Calculate Percentage Increase
Results are estimates for illustration only and not financial advice.