Percentage Calculator | Calculate Percent & Percent Change

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What is X% of Y?

% of

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X is what percent of Y?

—%

What is the percentage increase or decrease?

From to

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How to Calculate Percentage

Learn the formulas behind the most common percentage calculations.

Divide X by 100, then multiply the result by Y.

Formula: (X ÷ 100) × Y

Divide X by Y, then multiply the result by 100.

Formula: (X ÷ Y) × 100

Measure the increase or decrease between two values.

Formula: ((New − Old) ÷ Old) × 100

A percentage calculator is essential for a wide variety of everyday math problems.

Solve math problems, homework, and exam questions quickly.

Calculate growth, profit margins, and specific sales changes.

Compare prices, calculate discounts, and figure out returns.

Measure performance shifts and structural changes over time.

Find answers to common questions about percentage calculations and percent change.

What is a percentage calculator?

A percentage calculator is a tool used to calculate percentage values, percent change, and percentage increase or decrease between numbers.

How do you calculate percentage?

To calculate percentage, divide the part by the whole and multiply the result by 100. This calculator automates the process instantly.

How is percent change calculated?

Percent change is calculated by subtracting the original value from the new value, dividing by the original value, and multiplying by 100.

What is the difference between percentage and percent change?

Percentage shows a portion of a whole, while percent change measures how much a value has increased or decreased compared to its original amount.

Is this percentage calculator free to use?

Yes, this percentage calculator is completely free and works on all devices without any registration.