Percentage Calculator
Calculate percentages, percentage change, and percentage of a number easily.
🔒 No uploads⚡ Instant🆓 Free
What is X% of Y?
How It Works
1
Choose a calculation type from the tabs.
2
Enter your numbers in the input fields.
3
See the result calculated instantly.
Features
✓What is X% of Y?
✓X is what percent of Y?
✓Percentage increase/decrease
✓Instant real-time results
✓Clean, easy-to-use interface
✓All calculations done locally
Frequently Asked Questions
How do I calculate a percentage?▼
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 change?▼
Percentage change = ((New Value - Old Value) / Old Value) × 100. A positive result means an increase, negative means a decrease.
Is this calculator accurate?▼
Yes. It uses standard JavaScript floating-point arithmetic which is accurate for typical calculations.
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