Percentage Calculator

Calculate X% of Y, what percent X is of Y, or percent change from X to Y.

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How to use Percentage Calculator

Three quick steps — no sign-up needed

  1. Step 1

    Choose what to find

    Select X% of Y, X is what % of Y, or % change from X to Y.

  2. Step 2

    Enter X and Y

    Fill the two values for the selected mode.

  3. Step 3

    Read the result

    Use the percentage output in markups, discounts, or analysis.

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About Percentage Calculator

Percentage Calculator solves everyday percent problems: what is X% of Y, X as a percent of Y, and percent change from X to Y. Students and professionals searching "percentage calculator", "percent change", or "what percent is" need reliable arithmetic without spreadsheet formulas.

Pick the mode, enter X and Y, and read the result. Percent change uses (new - old) / old - watch the order of X and Y so the direction of change is correct.

A simple calculator for learning and business maths - not a full statistical package.

Benefits of Percentage Calculator

Three common modes Of, is-what-percent, and change.
Clear X and Y inputs Less formula confusion.
Markup and discount help Quick commercial maths.
Study friendly Check homework percent problems.

Frequently asked questions

How do I find 18% of 250?

Choose "What is X% of Y?", set X=18 and Y=250.

What is percent change?

The relative difference between an old and new value, as a percentage.

Why is my percent change negative?

The new value is lower than the old value.

Can it do successive percentages?

Apply one result as the next input - do not simply add percents.

Is this the same as percentage points?

Percentage points measure absolute difference between percents; this tool focuses on standard percent maths.