Percentage Calculator
Calculate percentages, discounts and percentage changes instantly. No sign-up required.
What is X% of Y?
For example, what is 15% of 200?
How to calculate percentages
To find a percentage of a number, divide the percentage by 100 and multiply by the number. For example, 15% of 200 is (15 ÷ 100) × 200 = 30.
How to calculate percentage change
Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result indicates an increase and a negative result indicates a decrease. If the original value is zero, the standard percentage-change formula is undefined.
How to calculate a discount
For a 20% discount on AED 500, calculate 20% of 500 (AED 100) and subtract it from 500. The discounted price is AED 400. Use the Increase / decrease tab for the final amount.
How does reverse percentage work?
If AED 120 is the price after a 20% increase, divide 120 by 1.20 to get the original price of AED 100. For decreases, divide by (1 − percentage ÷ 100). A decrease of 100% cannot be reversed to a unique original amount.
Is this calculator free?
Yes. Calculations run in your browser and require no account or server upload.