Percentage Calculator
Three percentage problems solved: of, is-what-percent, and change. Calculate percentages three ways: X% of a number, what percent X is of Y, and percentage increase or decrease between two values. Free percentage calculator.
About the Percentage Calculator
Almost every percentage question is one of three shapes: what is 15% of 240, what percent is 30 of 120, and what is the change from 80 to 100. This calculator answers all three in one place with labelled inputs, so you never have to remember which way to divide. Results appear instantly as you type, and each mode shows the calculation it performed — useful for homework checks, discounts, taxes, tips and growth reports.
How to use the Percentage Calculator
- Pick the mode matching your question.
- Enter the two numbers.
- Read the result — it updates as you type.
- Check the shown working for homework or reports.
Key features
- Find X% of any number
- Find what percentage one number is of another
- Percentage increase or decrease between two values
- Shows the working behind every answer
How do I calculate percentage change?
Why is a 50% increase followed by a 50% decrease not zero?
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