Percentage Calculator
Calculate percentages instantly. Find percentage of a number, percentage change, increase/decrease, and percentage difference.
What is X% of Y?
X is what % of Y?
Percentage Change from X to Y
Increase / Decrease a Number by Percentage
Percentage Difference between X and Y
How to Use
Choose the type of percentage calculation you need.
Enter the numbers in the input fields.
Results are calculated instantly as you type.
Use the different sections for various percentage operations.
Frequently Asked Questions
How do I calculate percentage of a number?
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = (20 × 150) / 100 = 30.
What is percentage change?
Percentage change measures how much a value has increased or decreased relative to its original value. Formula: ((New - Old) / |Old|) × 100. A positive result means increase, negative means decrease.
What is percentage difference?
Percentage difference compares two values relative to their average. It's useful when neither value is the 'original'. Formula: (|A - B| / average(A, B)) × 100.