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Percentage calculator

Work out percentages, discounts and percentage change.

What is X% of Y?

Enter two numbers

X is what percent of Y?

Enter two numbers

Percentage change from X to Y

Enter two numbers

Tips

You can type numbers with commas, like 1,250,000. Results update as you type.

Worked out in your browser. Nothing is sent anywhere.

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Three ways to use it

  • What is X% of Y? For example, 15% of 2,400 is 360.
  • X is what percent of Y? For example, 45 out of 60 marks is 75%.
  • Percentage change. For example, a price going from 800 to 1,000 is a 25% increase.

How percentage change is worked out

Take the new value, subtract the old value, divide by the old value and multiply by 100. A negative answer is a decrease.