Loading calculator…
Calculate percentages quickly
This multi-mode percentage calculator handles the most common percentage problems: finding a percentage of a number, finding what percentage one value is of another, and calculating percentage increase or decrease.
Core formulas
X% of Y = (X ÷ 100) × Y
A is what % of B = (A ÷ B) × 100
Percent change = ((new − old) ÷ old) × 100
Example
To find 15% of 240, multiply 0.15 by 240. The result is 36. For a change from 80 to 100, the increase is 25%.
Questions
Frequently asked questions
How is percentage increase calculated?
Subtract the old value from the new value, divide by the old value, then multiply by 100.