Percentage Calculator
Calculate percentages — what is X% of Y, what % is X of Y, and percentage change.
How to use this tool
1
Open Percentage Calculator
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2
Enter your data
Paste or type your input. Results appear instantly.
3
Copy or download
Export your result with one click — ready to use anywhere.
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Copy & download
Export results in one click, ready to paste anywhere.
FAQ
How do I calculate X% of Y?
Multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 / 100 = 30.
How do I find percentage change?
Percentage change = (New − Old) / Old × 100. Positive is an increase, negative is a decrease.