Percentage Calculator - Calculate % Online Free

Mode 1 — X% of Y

What is % of

Mode 2 — X is what % of Y?

is what % of

Mode 3 — Percentage Change

From to

Our Percentage Calculator offers 5 different calculation modes to handle any percentage problem you face in daily life, studies or business.

5 Calculation Modes

Mode 1: What is X% of Y? → Find percentage of a number
Mode 2: X is what % of Y? → Find what percentage one number is of another
Mode 3: Percentage Increase → From old value to new value
Mode 4: Percentage Decrease → Reduction in value
Mode 5: Percentage Difference → Between two values

Common Examples

What is 15% of 200? = 30
30 is what % of 200? = 15%
Increase from 100 to 120 = 20% increase
Decrease from 200 to 150 = 25% decrease

Where Percentages Are Used

📊 Business profit and loss calculations
🏦 Bank interest rates
🛍️ Shopping discounts and sales
🎓 Exam marks and grades
📈 Stock market returns

Frequently Asked Questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. For example, 20% of 250 is 250 times 20 divided by 100, which equals 50.

How do I find what percentage one number is of another?

Divide the first number by the second and multiply by 100. The calculator handles this and several other percentage problems automatically.

How do I calculate percentage increase or decrease?

Find the difference between the two values, divide by the original value, and multiply by 100. A positive result is an increase and a negative one is a decrease.