How do I calculate percentage?

To find X% of Y, multiply Y by X and divide by 100. For example, 15% of 200 = (200 × 15) / 100 = 30.

How do I calculate percentage increase?

Percentage increase = ((New Value - Old Value) / Old Value) × 100. For example, if a price goes from 500 to 650, the increase is ((650-500)/500) × 100 = 30%.

What is the difference between percentage and percentile?

Percentage is a way of expressing a number as a fraction of 100 (e.g., 75% means 75 out of 100). Percentile is a ranking metric — if you are in the 90th percentile, you scored higher than 90% of the group.

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Percentage Calculator

Solve any percentage problem — find percentages, percentage increase, decrease, and difference.

What is X% of Y?

What is % of = ?

X is what percent of Y?

is what % of = ?

Percentage Change (Increase / Decrease)

From to = ?

Increase / Decrease a number by X%

% = ?

Percentage Difference between two numbers

Between and = ?

Percentage Calculator — Four Types of Calculations

This percentage calculator handles the four most common percentage problems in one place. X% of Y: find a percentage of a number (e.g. 15% of 200 = 30). X is what % of Y: find what percentage one number is of another (e.g. 30 is what % of 200 = 15%). Percentage change: find the increase or decrease from one value to another (e.g. from 200 to 250 = 25% increase). Add/subtract %: add or subtract a percentage from a value (e.g. 200 + 15% = 230).

How to Calculate a Percentage

To find X% of a number: multiply the number by X/100. Example: 20% of 500 = 500 × 0.20 = 100. To find what percentage X is of Y: divide X by Y and multiply by 100. Example: 80 is what % of 400? → (80/400) × 100 = 20%. To find percentage change: (New − Old) / Old × 100. Example: from 80 to 100 → (100−80)/80 × 100 = 25% increase.

Common Percentage Calculations

10% of any number: move the decimal point one place left (10% of 850 = 85). 25%: divide by 4 (25% of 200 = 50). 50%: divide by 2. 75%: divide by 4 and multiply by 3. 1%: move the decimal two places left (1% of 3500 = 35). For all other percentages, use the calculator above.

Percentage Increase and Decrease

Percentage increase = (New Value − Old Value) / Old Value × 100. Percentage decrease = (Old Value − New Value) / Old Value × 100. Example: a product price rises from ₹800 to ₹1,000 — that is a (200/800) × 100 = 25% increase. If it drops from ₹1,000 to ₹800 — that is a (200/1000) × 100 = 20% decrease. Note the asymmetry: a 25% increase followed by a 20% decrease returns to the original value.

Frequently Asked Questions

To find X% of Y, multiply Y by X/100. Example: 15% of 300 = 300 × 0.15 = 45. Use the calculator above for all four types of percentage problems.

Multiply the number by 0.20. Example: 20% of 500 = 100. Quick method: find 10% (move decimal one left) then double it.

Divide the first number by the second, then multiply by 100. Example: 45 is what % of 180? → (45 ÷ 180) × 100 = 25%.

(New − Old) ÷ Old × 100. Example: price went from 400 to 500 → (500−400) ÷ 400 × 100 = 25% increase.

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