Percentage Calculator

Solve everyday percentage questions instantly, including percent of a number, percentage of total, and increase or decrease.

percentage calculatorpercent calculatorpercentage change calculatorcalculate percentage

Interactive Tool

ModeFirst valueSecond value

What is X% of Y?

Formula

15% x 200 = 30

This percentage calculator covers the most common percentage questions in one focused interface.

Use it for discounts, taxes, growth rates, score comparisons, finance checks, and quick math without manual formulas.

Choose a percentage mode
Select percent of a number, what percent, or percentage change.
Enter the numbers
Fill in the two values required by the selected formula.
Copy the result
Review the answer and formula so you can reuse it confidently.

Find percent of a number

Calculate 15% of 200 for a discount or tax estimate.

Input

15% of 200

Output

Percentage increase

Calculate the percentage change from an old value to a new value.

Input

Old: 80, New: 100

Output

25% increase

What percentage calculations are supported?

The tool supports percent of a number, one number as a percent of another, and percentage increase or decrease.

Can I use it for discounts and tax?

Yes. The percent of a number mode is useful for discounts, tax estimates, tips, and fee calculations.

How is percentage change calculated?

Percentage change is calculated as (new value - old value) divided by old value, multiplied by 100.