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 = ?

How to Calculate Percentage

Percentage means "per hundred." To find X% of a number Y, multiply Y by X and divide by 100. For example, 15% of 200 is (200 × 15) / 100 = 30. This calculator handles five common percentage problems in one page, so you don't need to figure out which formula to use — just fill in the numbers you have and get the answer instantly.

The Five Percentage Calculations Explained

What is X% of Y? — The most basic percentage operation. Enter the percentage and the total, get the part. Formula: (Y × X) / 100.

X is what % of Y? — When you know the part and the total, find the percentage. Formula: (X / Y) × 100.

Percentage change — How much did a value increase or decrease in percentage terms? Formula: ((New − Old) / Old) × 100. A positive result means increase, negative means decrease.

Increase/decrease by X% — Start with a number and add or subtract a percentage. To increase 500 by 20%: 500 + (500 × 20/100) = 600.

Percentage difference — How different are two numbers as a percentage? Formula: |A − B| / ((A + B) / 2) × 100. Unlike percentage change, this doesn't assume one value is the "original."

Frequently Asked Questions

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

Percentage increase = ((New Value − Old Value) / Old Value) × 100. For example, from 500 to 650 is ((650−500)/500) × 100 = 30% increase.

Percentage is a fraction of 100 (e.g., 75%). Percentile is a ranking — being in the 90th percentile means you scored higher than 90% of the group.

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