Meet Your New Percentage Calculator

This percentage calculator handles four common tasks with clear results. It keeps your math simple and fast.

Simplify Your Calculations

Use the percentage calculator for four types of work. Find a percentage of a number. Measure percent change between two values. See what percent one number is of another. Add or subtract a percentage from a base value.

Easy-to-Use Features

Each mode focuses on a single goal. You enter numbers and get a clear result line.

• What is X percent of Y: Find a portion of a number.
• Percentage change: Compare two values and see the percent shift.
• X is what percent of Y: Turn a part over total into a percent.
• Add or subtract percentage: Apply a percent increase or a percent cut.

How to Use This Tool

Follow these steps for any mode. Choose the calculator you need. Enter your numbers in each field. Click Calculate or press Enter. Read the result line below the button.

1. What is X percent of Y
   • Percentage: Type the percent you want to apply.
   • Number: Type the base number.
   • Output reads: X percent of Y equals Z.
   • Example: 25 percent of 200 equals 50.
2. Percentage change
   • From: Type the original value.
   • To: Type the new value.
   • Output reads: N percent increase plus difference, or N percent decrease minus difference.
   • Example: From 100 to 125 shows 25 percent increase plus 25.
3. X is what percent of Y
   • Part: Type the part value.
   • Total: Type the total value.
   • Output reads: Part is P percent of Total.
   • Example: 25 is 12.5 percent of 200.
4. Add or subtract percentage
   • Starting value: Type the base value before change.
   • Operation: Pick Add or Subtract.
   • Percentage: Type the percent to apply.
   • Output reads: Base plus or minus percent equals result.
   • Example: 100 plus 15 percent equals 115. 100 minus 15 percent equals 85.

Input field guide

• Percentage and Percentage change: Use whole numbers or decimals.
• Number, From, To, Part, Total, Starting value: Use any number that fits your case.
• Operation: Pick Add for an increase or Subtract for a cut.

How to read the results

• Results show thousands separators for large numbers.
• Results round to two decimals when needed.
• The percentage change line also shows the difference in the same units.

Notes and limits

• Use numbers in all fields to get a result.
• Use a starting value other than zero for percentage change.
• Use a total value greater than zero for the part over total mode.
• Press Enter in any field to run the calculation fast.

Real-World Benefits

The percentage calculator saves time and avoids guesswork. It helps with prices, budgets, grades, and reports. Use it at work or in class or at home.

• Check sale prices and discounts.
• Review tax, tips, and markups.
• Track growth, churn, and conversion rates.
• Compare grades and test scores.
• Estimate savings and interest changes.
• Plan nutrition and recipe portion splits.

Your Tool in Action

Here are quick examples that match the outputs you will see.

• What is X percent of Y: 18 percent of 250 equals 45.
• Percentage change increase: From 80 to 100 shows 25 percent increase plus 20.
• Percentage change decrease: From 120 to 90 shows 25 percent decrease minus 30.
• X is what percent of Y: 45 is 18 percent of 250.
• Add percentage: 240 plus 12.5 percent equals 270.
• Subtract percentage: 240 minus 12.5 percent equals 210.

Use these patterns to check your own numbers. The result line spells out the math in plain text.

Simple, Fast, and Fun

This percentage calculator gives quick answers you can trust. It accepts decimals and large numbers with ease.

Try it with your next discount or budget update. Enter the numbers and get a clean result in seconds.