% Percentage Calculator
Work out percentages, shares, and percent change instantly
Calculate percentages three ways: find X% of a number, work out what percentage one number is of another, and calculate the percentage increase or decrease between two values. Each result shows the formula used.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 20% of 150 is 150 × 20 ÷ 100 = 30. Enter both values above to get the answer instantly.
How do I work out percentage increase or decrease?
Subtract the old value from the new value, divide by the old value, and multiply by 100. A positive result is an increase; a negative result is a decrease.