How to calculate a percentage
To find out how much X% of a value is, multiply the value by the percentage and divide by 100: result = value × (percentage ÷ 100). For example, 15% of 200 is 200 × 0.15 = 30.
Common uses
Discount calculations, simple interest, tips, sales commissions and percentage change between two values are the most common everyday uses of this calculation.
Frequently asked questions
How do I calculate X% of a value?
Multiply the value by the percentage and divide by 100.
Can I use this for discounts?
Yes — calculate the discount percentage and subtract it from the original value.