Percentage Calculator
Calculate percentages easily. Find what percent one number is of another, calculate percentage increase or decrease, and more.
📖 How to Use
Choose the type of percentage calculation you need, enter your numbers, and get instant results. This calculator handles all common percentage problems including finding percentages, calculating increases/decreases, and determining what percent one number is of another.
What Can You Calculate?
What is X% of Y?
Find a percentage of any number. Example: What is 15% of 200?
X is what % of Y?
Find what percentage one number is of another. Example: 30 is what % of 150?
Percentage Increase
Calculate the percentage increase from one number to another.
Percentage Decrease
Calculate the percentage decrease from one number to another.
Frequently Asked Questions
❓How do I calculate a percentage?
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 50 = (50 × 20) ÷ 100 = 10.
❓How do I find percentage increase or decrease?
Percentage change = ((New Value - Old Value) ÷ Old Value) × 100. A positive result is an increase, negative is a decrease.