calculators

Percentage Calculator

Solve everyday math problems involving percentages, including discounts, sales tax, markups, and percentage change over time.

Calculated on your device.

What is X% of Y?

What is% of=30.00

X is what percentage of Y?

is what % of=25.00%

Percentage Change (Increase / Decrease)

Fromto=Increase of 50.00%
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How to Use Percentage Calculator

1

Select Calculation Type

Choose 'What is X% of Y', 'X is what % of Y', or 'Percentage Increase/Decrease'.

2

Enter Numbers

Fill in the two input values.

3

View Result

Read the computed answer with the step-by-step formula explanation.

About Percentage Calculator

Percentage calculations express a ratio as a fraction of 100, calculated as (Value / Total) * 100.

Key Features

  • What is X% of Y?
  • X is what percentage of Y?
  • Percentage increase/decrease from Value A to Value B
  • Displays step-by-step calculation formulas

Frequently Asked Questions

Subtract the original number from the new number, divide the difference by the original number, and multiply by 100.