Percentage Calculator
Work out percentages, percentage change and percentage increases in one place.
How it’s calculatedX% of Y = X ÷ 100 × Y. X as a percent of Y = X ÷ Y × 100. Percentage change = (new − old) ÷ |old| × 100.
How to calculate percentages
- Pick a calculationChoose percent of, what percent, or percentage change.
- Enter the numbersType the values.
- Get the answerThe result appears instantly.
About the Percentage Calculator
Handy for discounts, exam marks, tips, tax, growth rates and business reports.
- Percent of a number
- What percent X is of Y
- Percentage increase and decrease
Percentage Calculator FAQ
How do I find 20 percent of a number?
Multiply the number by 20 and divide by 100. The calculator does it for you.
How is percentage change calculated?
(New value minus old value) divided by old value, times 100.
How do I calculate exam percentage?
Divide marks obtained by total marks and multiply by 100.
Is it free?
Yes.