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OEWER Tools

Finance Calculators

Percentage Calculator

Calculate percentages, increases, decreases and differences.

  • Free
  • No sign-up
  • Runs in your browser
20% of 150
30

How to use Percentage Calculator

Pick the kind of calculation, then enter two numbers:

  • X% of Y: for example, 20% of 150.
  • X is what % of Y: for example, 25 out of 200.
  • % change from X to Y: how much a value went up or down.
  • Increase or decrease X by Y%: for example, a price rise of 10%.

Examples

  • Discount

    Decrease 2,000 by 25% to get 1,500.

  • Marks

    42 out of 60 is 70%.

  • Price change

    From 80 to 100 is a 25% increase.

Frequently asked questions

Why can't the old value be 0 for a % change?

A change from zero cannot be shown as a percentage because dividing by zero is undefined.

Can I use decimals and negative numbers?

Yes for most modes. Commas in numbers such as 1,00,000 are fine.

Is the information I type saved?

No. The calculation runs in your browser and nothing is sent or stored.

Guides about Percentage Calculator