Piclizer

Percentage Calculator

Handle every everyday percentage question in one place. Pick the type of problem, enter two numbers, and see the answer together with the formula and the steps behind it.

What do you want to calculate?

Find a percentage of a number.

Values

Percentage (%)
Total

Formula

  • What is X% of Y?:(X ÷ 100) × Y
  • X is what percent of Y?:(X ÷ Y) × 100
  • Percentage change from X to Y:((Y − X) ÷ X) × 100
  • Increase or decrease X by Y%:X × (1 ± Y ÷ 100)
  • X is Y% of what number?:X ÷ (Y ÷ 100)
Switch modes to solve for the part, the percentage or the whole.
All processing is done locally in your browser. Your images never leave your device.

How to use

  1. 1

    Choose the kind of percentage problem you need to solve.

  2. 2

    Enter the two values in the fields shown.

  3. 3

    Read the result and the step-by-step working.

  4. 4

    Switch modes at any time to try another calculation.

Supported formats

Accepts

Produces

FAQ

Divide the percentage by 100 and multiply by the number — 20% of 250 is (20 ÷ 100) × 250 = 50.

Subtract the old value from the new one, divide by the old value and multiply by 100.

Because each percentage is applied to a different base. Dropping 100 by 50% gives 50, and adding 50% of 50 only brings you back to 75.

Modes that would divide by zero show a clear message instead of an incorrect result.

Yes. Each result includes the formula and the substituted values so you can check the working.

About this tool: Percentage Calculator

Every percentage question, one tool

The Percentage Calculator answers all three classic percentage questions: what is X% of Y, what percentage is X of Y, and what is the percentage change from one value to another. Each mode is a separate input, so there is no wondering which number goes where.

Percentages trip people up because the question direction changes the computation: a 20% increase is not undone by a 20% decrease, percentage points are not percentages, and “X% of Y” is easy to flip accidentally. The tool makes each direction explicit and shows the arithmetic so you can verify it.

All calculations run locally and instantly. Use it for marks, taxes, interest, discounts, statistics and any daily figure that involves “percent” — the most common source of quick mental-math errors in everyday arithmetic.

Like every Piclizer tool, this one runs entirely in your browser — your files stay on your device.

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