Percentage Calculator

Advanced percentage calculator for students and professionals. Calculate basic percentages, percentage increase/decrease, and find values from percentages with detailed breakdowns.

Calculators

What % is X of Y?

Value

Total

12.50%

25 is 12.50% of 200

Percentage Change

Original Value

New Value

+50.00%

Increase

What is X% of Y?

Percentage

Total

100.00

20% of 500 is 100.00

Quick Reference

Percentage: (Value ÷ Total) × 100

Value from %: (Percentage ÷ 100) × Total

% Change: ((New - Original) ÷ Original) × 100

About & Features

Learn more about this tool and its capabilities

About Percentage Calculator

Our comprehensive percentage calculator is designed for students, professionals, and anyone who needs to work with percentages quickly and accurately. Whether you're calculating discounts, tax rates, grade percentages, or financial metrics, this tool provides instant results with detailed breakdowns.

The calculator supports multiple calculation types including basic percentage calculations, percentage increase/decrease, finding values from percentages, and reverse percentage calculations. Perfect for math homework, business calculations, shopping discounts, and statistical analysis.

Key Features:

Calculate what percentage X is of Y
Find what is X% of Y
Calculate percentage increase or decrease
Reverse percentage calculations
Formula reference and explanations
Real-time calculation updates

How to Use

Step-by-step guide to get the most out of this tool

How to Use the Percentage Calculator

Basic Percentage (What % is X of Y?)

Enter the value (X) in the first field
Enter the total (Y) in the second field
See the instant result showing what percentage X is of Y
Example: What % is 25 of 200? Answer: 12.5%

Find Value from Percentage (What is X% of Y?)

Enter the percentage (X%) in the first field
Enter the total value (Y) in the second field
Get the calculated value instantly
Example: What is 20% of 500? Answer: 100

Percentage Change

Switch to the "Change" tab
Enter the original value
Enter the new value
See percentage increase or decrease with detailed breakdown
Example: From 100 to 150 = 50% increase

Pro Tips:

All calculations update in real-time as you type
Use the copy button to quickly copy results
Check the formula reference for learning
Percentage change shows both increase and decrease

Frequently Asked Questions

Common questions and answers about this tool

Frequently Asked Questions

How do I calculate percentage?

To calculate what percentage X is of Y, use the formula: (X ÷ Y) × 100. For example, to find what percentage 25 is of 200: (25 ÷ 200) × 100 = 12.5%.

How do I calculate percentage increase?

Use the formula: ((New Value - Original Value) ÷ Original Value) × 100. If a value increases from 100 to 150: ((150 - 100) ÷ 100) × 100 = 50% increase.

How do I find 20% of a number?

Multiply the number by 0.20 or use the formula: (20 ÷ 100) × Number. To find 20% of 500: (20 ÷ 100) × 500 = 100.

What is the difference between percentage and percentile?

Percentage is a fraction of 100, while percentile is a measure used in statistics indicating the value below which a given percentage of observations fall. This calculator focuses on percentage calculations.

Can I use this for calculating discounts?

Yes! Use the "What is X% of Y?" calculator to find discount amounts. For a 25% discount on $200: Calculate 25% of 200 = $50 discount. Final price = $200 - $50 = $150.

How accurate are the calculations?

All calculations are performed with high precision and rounded to 2 decimal places for display. The calculator uses standard mathematical formulas to ensure accuracy.