Percentage Calculator

Free percentage calculator: Calculate percentage increase, decrease, change, percentage of a number, and percentage difference. Calculate discounts, markups, tips, and more. Best online percentage calculator tool.

What is% of?
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is what percent of?
0 %
What is the percentage increase/decrease fromto?
0 %
increased by%
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decreased by%
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Original value before% increase =
0
Percentage Formulas

Basic Percentage

X% of Y: (X/100) × Y

X is what % of Y: (X/Y) × 100

Percentage Change

% Increase: ((New - Old)/Old) × 100

% Decrease: ((Old - New)/Old) × 100

Percentage Points

X increased by Y%: X + (X × Y/100)

X decreased by Y%: X - (X × Y/100)

Reverse Calculation

Original before Y% increase: X/(1 + Y/100)

Original before Y% decrease: X/(1 - Y/100)

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Frequently Asked Questions

What is a Percentage Calculator?

A Percentage Calculator is a tool that helps you perform various percentage-related calculations including percentage increase, decrease, percentage of a number, percentage difference, discounts, markups, and more.

What percentage calculations can I perform?

Our percentage calculator supports multiple calculations including: percentage increase (how much a value increased), percentage decrease (how much a value decreased), percentage of a number (what is X% of Y), percentage difference (difference between two values as a percentage), discount calculations, markup calculations, and tip calculations.

How do I calculate percentage increase?

To calculate percentage increase: Subtract the original value from the new value, divide the result by the original value, and multiply by 100. Formula: ((New Value - Original Value) / Original Value) × 100. Our calculator does this automatically.

How do I calculate percentage decrease?

To calculate percentage decrease: Subtract the new value from the original value, divide the result by the original value, and multiply by 100. Formula: ((Original Value - New Value) / Original Value) × 100. Our calculator handles this calculation for you.

Is the percentage calculator free?

Yes, our percentage calculator is completely free to use. You can perform unlimited percentage calculations without any restrictions, registration, or hidden fees.

Can I use it for discount and markup calculations?

Yes! Our percentage calculator is perfect for calculating discounts (percentage off), markups (percentage increase for profit), tips, tax calculations, and any other percentage-based calculations you need.