Percentage Calculator

To find what percentage X is of Y, divide X by Y and multiply by 100. For example, to find what percentage 25 is of 200: (25 ÷ 200) × 100 = 12.5%. Our calculator does this automatically - just enter the two numbers and select the appropriate calculation type.

To calculate percentage change, subtract the original value from the new value, divide by the original value, and multiply by 100. For example, if a price increased from $50 to $60: ((60 - 50) ÷ 50) × 100 = 20% increase. Use our percentage change calculator for instant results.

To find X% of a number, multiply the number by X and divide by 100. For example, to find 15% of 200: (200 × 15) ÷ 100 = 30. Simply enter the percentage and the number in our calculator to get immediate results.

A percentage is a fraction out of 100, expressing how much of something you have. A percentile is a statistical measure indicating the value below which a given percentage of observations falls. For example, scoring in the 90th percentile means you scored better than 90% of people.

Yes, you can calculate the original value before a percentage increase or decrease. For example, if $120 is 120% of the original price (after a 20% increase), divide 120 by 1.20 to get the original price of $100. Our calculator supports various percentage calculations including reverse percentages.

Percentage points measure absolute change between percentages (from 20% to 25% is a 5 percentage point increase), while percentage change measures relative change (that same increase is a 25% increase since 5÷20=0.25). This distinction is crucial in finance, polling, and statistics.

Yes, compound percentages involve multiple successive percentage changes. For example, a 10% increase followed by a 10% decrease doesn't return to the original (it results in 99% of the original). Our calculator helps you understand how successive percentage changes compound.

To find the actual number that a percentage represents, multiply the total by the percentage and divide by 100. For example, 15% of 200 is (200 × 15) ÷ 100 = 30. This is useful for calculating tips, discounts, taxes, and commission amounts.

Margin is profit divided by selling price, while markup is profit divided by cost. A 50% markup doesn't equal 50% margin. For example, if cost is $60 and markup is 50%, selling price is $90 with a 33.3% margin. Understanding this difference is essential for pricing and profitability.