Percentage Calculator Pro

Solve all percentage problems with step-by-step solutions | Advanced Percentage Calculator

Percentage calculator in use on multiple devices
Live Preview:
Select a calculation type and enter values to see the preview

Calculation Result

Your result will appear here

About Percentage Calculator

Our advanced percentage calculator helps you solve various percentage-related problems with ease. Whether you need to calculate percentages, find percentage increases or decreases, or determine what percentage one number is of another, this tool provides accurate results instantly.

This calculator is particularly useful for students, teachers, accountants, and anyone who works with numbers regularly. It not only gives you the final answer but also shows the complete calculation formula, helping you understand the math behind the result.

How to Use This Calculator

Step-by-Step Guide:

  • Select calculation type from the dropdown menu
  • Enter your values in the input fields
  • View the live preview that shows your calculation
  • Click Calculate to see the detailed result
  • Review the formula to understand the calculation

Calculation Types Explained:

  • What is X% of Y? - Finds the percentage amount of a number
  • X is what % of Y? - Calculates what percentage X is of Y
  • Percentage increase/decrease - Determines the percentage change between values
  • Amount plus/minus percentage - Adds or subtracts a percentage from a value

Frequently Asked Questions

How do I calculate a percentage of a number?
To calculate X% of Y, multiply Y by (X/100). For example, to find 20% of 50: 50 × (20/100) = 10. Our calculator does this automatically when you select "What is X% of Y?".
How do I find what percentage one number is of another?
To find what percentage X is of Y, divide X by Y and multiply by 100. For example, to find what percentage 25 is of 50: (25/50) × 100 = 50%. Use our "X is what % of Y?" option for this calculation.
What's the difference between percentage increase and percentage change?
Percentage increase specifically measures growth from an original value to a higher new value. Percentage change can be either positive (increase) or negative (decrease). Our calculator handles both scenarios automatically.
Can I calculate percentage decreases with this tool?
Yes! Use either the "X is what % decrease of Y?" option for direct decrease calculations, or the percentage change option which will show decreases as negative percentages.
How accurate are the calculations?
Our calculator provides precise calculations up to 16 decimal places, though results are typically displayed with 2 decimal places for readability. The formula display shows the exact calculation used.