Percentage Calculator
Calculate percentages, percentage increase/decrease, and more
1What is X% of Y?
X% of Y
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2X is what % of Y?
X is what % of Y
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3Percentage Change
Change from X to Y
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Frequently Asked Questions
How do I calculate a percentage of a number?▼
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 $50 to $65, the increase is ((65-50)/50) × 100 = 30%.
How do I calculate percentage decrease?▼
Percentage decrease = ((Old Value - New Value) / Old Value) × 100. For example, if a price drops from $80 to $60, the decrease is ((80-60)/80) × 100 = 25%.
What is the formula for calculating percentages?▼
The basic percentage formula is: Percentage = (Part / Whole) × 100. This can be rearranged to find any of the three values when you know the other two.
How to Use Percentage Calculator
- 1Open the Percentage Calculator tool above - it loads instantly in your browser.
- 2Enter your data or upload your file. Everything is processed locally on your device - nothing is uploaded to any server.
- 3Get your results instantly. Copy, download, or share - completely free with no signup required.
Percentage Calculatoris part of BriskTool's collection of free online tools. All tools run entirely in your browser for maximum privacy and speed.