Percentage Calculator
Free percentage calculator: find a percent of a number, what percent one number is of another, and percentage increase or decrease. Instant results.
What is P% of a number?
% of
X is what percent of Y?
is what % of
Percentage change from X to Y
→
Percentage calculator
Three calculators in one: find a percentage of a number, work out what percentage one value is of another, and measure the percentage increase or decrease between two numbers. Results update as you type.
Frequently asked questions
How do I find a percentage of a number?
Multiply the number by the percentage divided by 100. For example, 20% of 150 is 150 × 0.20 = 30. The first calculator does this for you.
How is percentage change calculated?
Percentage change = (new − old) ÷ |old| × 100. A result above zero is an increase; below zero is a decrease.
What does 'X is what percent of Y' mean?
It tells you the proportion one number is of another: (X ÷ Y) × 100. For example, 30 is 20% of 150.