Percentage calculator
Three everyday percentage questions, answered as you type.
What is X% of Y?
X is what percent of Y?
Percentage increase or decrease
How it works
X% of Y is Y × X ÷ 100. To find what percent A is of B, divide A by B and multiply by 100.
Percentage change is (new − old) ÷ |old| × 100. Results are rounded to hide floating-point noise such as 0.30000000000000004.