CALCULATORS

Percentage Calculator 📊

Find percentages of numbers, percent change, percentage increase or decrease and percentage differences.

Percent of a numberIncrease and decreaseInstant percentage results

What is X% of Y

Result

X is what percent of Y

Result

20%

Percentage increase / decrease

Percent change

25% increase

Percentage difference

Difference between the two values

22.22%

Quick examples: 10% of 200, 15% of 80, 25% of 400, 5% of 999

How this percentage calculator helps

Percentage calculations come up all the time in shopping, finance, school, statistics, fitness and daily life. This calculator keeps the most common percentage formulas on one page without extra clutter.

Common percentage calculations

You can use this page to find a percent of a number, check what percent one value is of another, calculate percentage increase or decrease, and compare two numbers with percentage difference.

Percent increase and decrease

Percentage increase shows how much a new value went up compared with the original value. Percentage decrease shows how much it went down. This is useful for prices, sales, weight changes, traffic changes, profits and many other everyday comparisons.

Percentage difference

Percentage difference compares two values by looking at the difference relative to their average. It is useful when neither number is clearly the starting point and you simply want to compare them.

Percentage Calculator FAQ

How do I calculate a percentage of a number?

Enter the percentage and the total number in the first calculator. For example, 20% of 150 is 30.

How can I find what percent one number is of another?

Enter the part and the whole in the second calculator. The result equals the part divided by the whole, multiplied by 100. The whole cannot be zero.

How do I calculate percentage increase or decrease?

Enter the original value and the new value. The calculator compares their difference with the original amount and labels the change as an increase or decrease.

What is the difference between percentage change and percentage difference?

Percentage change compares a new value with a starting value. Percentage difference uses the average of both values as its reference, so neither one needs to be the starting point.

Can this calculator handle decimals and negative values?

Yes. The inputs accept decimal and negative numbers. Results follow the chosen formula, although percentages based on a zero denominator are undefined.