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Percentage Calculator

Work out percentages in one step — find a percent of a number, see what percent one value is of another, or measure the change between two numbers. Results update instantly and never leave your browser.

Find a percentage of a number — for example, 25% of 200.

Values

Percentage

Of value

Result

Enter both numbers to see the result.

How to use Percentage Calculator

  1. 1

    Choose a calculation

    Pick % of to find a percentage of a number, Find % to see what percent one value is of another, or % change to compare two numbers.

  2. 2

    Enter your two numbers

    Type a value into each field. Commas and a stray percent sign are ignored, so 1,000 and 25% both work.

  3. 3

    Read the result

    The answer updates as you type. Percentage change also shows whether the move was an increase or a decrease.

  4. 4

    Copy the answer

    Copy the result with one click, ready to drop into a spreadsheet, a report, or a message.

Frequently asked questions

How do I calculate a percentage of a number?
Choose % of, enter the percentage and the value, and the result appears instantly. For example, 25% of 200 is 50.
How do I find what percent one number is of another?
Choose Find %, enter the value and the total, and the calculator divides one by the other. So 50 out of 200 is 25%.
How is percentage change calculated?
Choose % change, then enter the starting and ending values. The change is the difference divided by the starting value, so a move from 200 to 250 is a 25% increase.
What is the difference between percentage increase and decrease?
An increase means the ending value is larger than the start, and a decrease means it is smaller. The calculator labels every result so the direction is always clear.
Does the calculator round results?
Results are rounded to six decimal places to stay readable, which trims the long trailing digits that floating-point math can otherwise produce.

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