Calculate percentages instantly — find X% of Y, what percent X is of Y, percentage change, increase, decrease, and more.
The Percentage Calculator is your go-to tool for all percentage-related math. Whether you need to find what percentage one number is of another, calculate a percentage of a value, or determine the percentage change between two numbers, this tool handles it all instantly.
Percentages are everywhere — discounts, tax rates, tips, grades, statistics, and financial returns. Instead of fumbling with formulas, just enter your numbers and get immediate, accurate results. The calculator supports six common percentage operations, making it the only percentage tool you'll ever need.
Multiply the number by the percentage and divide by 100. For example, 15% of 200 = 200 × 15 / 100 = 30. Our calculator does this instantly.
Divide the part by the whole and multiply by 100. For example, 30 is what % of 200? Answer: (30 / 200) × 100 = 15%.
Percentage change measures how much a value has increased or decreased relative to its original value. Formula: ((New - Old) / Old) × 100.
Percentage increase adds a percentage to a value (e.g., price + tax). Percentage decrease subtracts a percentage (e.g., price after discount). The formulas are reversed operations.
Yes, you can enter any decimal value like 7.5% or 0.25%. The calculator handles arbitrary precision.
Absolutely. Use "What is X% of Y?" — enter 18 for the percentage and your bill amount for the value to get the tip amount.