Picsova

Percentage Calculator

Work out what X% of a number is, what one number is as a percent of another, and percentage increase or decrease, all in one place.

Runs entirely in your browser. Nothing is uploaded.

What is X% of Y?

% of
30

X is what % of Y?

is what % of
25%

% change from X to Y

from to
25%

Percent of, change & more

Percentages are three different questions that people mix up constantly: what a percentage of a number comes to, what one number is as a percentage of another, and how much something changed from one value to the next. All three are here side by side, so you can pick the one that matches your question instead of trying to remember which way round the formula goes.

How to calculate a percentage

  1. 1

    Pick the right calculation

    Choose percentage of a number, one number as a percentage of another, or percentage increase and decrease.

  2. 2

    Enter your numbers

    The answer is calculated as you type.

  3. 3

    Read the result

    Copy or note the figure you needed.

Good to know

  • Percentage of a number: 15% of 240 is 36 — multiply by the percentage and divide by 100.
  • One number as a percentage of another: 36 out of 240 is 15% — divide, then multiply by 100.
  • Percentage change compares against the starting value, which is why a 50% fall followed by a 50% rise does not get you back where you began.
  • Nothing is sent anywhere, so figures from a real budget or invoice stay on your device.

What people use it for

  • Working out a discount, tip, or sales-tax amount
  • Calculating how much a price, salary, or metric changed month over month
  • Turning a score or a share of a total into a percentage

Frequently asked questions

What can it calculate?+

What X% of a number is, what one number is as a percentage of another, and the percentage increase or decrease between two numbers.

Is my data sent to a server?+

No. Calculating happens entirely in your browser using built-in web APIs. Nothing is uploaded, stored, or logged.

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