🔢 What is X% of Y?

Example: What is 20% of 500? → 100

Percentage (%)

Of Number

❓ X is what % of Y?

Example: 50 is what % of 200? → 25%

Value (X)

Total (Y)

📈 Percentage Change

Calculate increase or decrease from one value to another.

Original Value

New Value

➕ Add / Subtract Percentage

Add or subtract a percentage from a number.

Number

Percentage (%)

↔️ Percentage Difference

Find the percentage difference between two values.

Value A

Value B

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📖 About This Calculator

Our Percentage Calculator is a five-in-one tool that handles every type of percentage problem you will ever encounter. Whether you need to find what percentage one number is of another, calculate a percentage increase or decrease between two values, apply a discount or add tax to a price, or find the percentage difference between two figures — this tool does it all in one place. Simply select the type of calculation you need, enter your numbers, and get an instant answer complete with the formula used, a rounded result, the decimal equivalent, and a fraction form. A helpful tips section explains each result in plain language so you always understand exactly what the number means. No sign-up, no ads, no confusion — just fast and accurate percentage calculations.

🚀 How to Use

1 Select the calculation type from the tab bar at the top — choose from % of Number, What % is X of Y, % Change, Add / Subtract %, or % Difference.

2 Enter the required numbers in the input fields shown on screen.

3 For the Add / Subtract % tab, choose whether you want to add or subtract the percentage using the toggle buttons.

4 Click the Calculate button.

5 Your result appears instantly in the blue display at the top, along with the formula used to reach it.

6 Scroll down to see additional stats — rounded value, decimal, and fraction form.

7 Read the Quick Tips section for a plain-language explanation and real-world use case.

8 To start a new calculation, click Reset or simply switch to a different tab.

❓ Frequently Asked Questions

Percentage change measures how much a value has increased or decreased from one specific point to another — it has a clear starting value and an ending value. Percentage difference, on the other hand, compares two values without treating either one as the original. It is symmetric, meaning the result is the same regardless of which value you enter first. Use percentage change for growth or decline over time, and percentage difference when simply comparing two unrelated values.

To find a percentage of any number, divide the percentage by 100 and then multiply by the number. For example, to find 15% of 800: divide 15 by 100 to get 0.15, then multiply by 800 to get 120. Our calculator does this instantly using the "% of Number" tab — just enter the percentage and the number and click Calculate.

Yes. The Add / Subtract % tab is designed exactly for this purpose. To add tax such as GST or VAT, enter the original price, enter the tax percentage, select Add, and click Calculate. To apply a discount, do the same but select Subtract instead. The result shows the final price along with exactly how much was added or deducted.

A negative percentage change means the value has decreased from the original to the new figure. For example, if a product price dropped from 500 to 400, the percentage change is −20%, indicating a 20% decrease. Our calculator automatically labels the result as either Percentage Increase or Percentage Decrease and highlights it in green or red so you can tell at a glance which direction the change went.

⚠️ Disclaimer

This Percentage Calculator is provided for general informational and educational purposes only. All results are computed using standard mathematical formulas and are intended to serve as a quick reference. While every effort has been made to ensure accuracy, the results produced by this tool should not be used as the sole basis for any financial, legal, tax, medical, or business decision. For matters involving taxation, accounting, investments, or other professional fields, please consult a qualified professional. The developers of this tool accept no liability for errors, omissions, or any outcomes resulting from the use of this calculator.