Percentage Finder

Percentage Finder is a free online tool to calculate percentages quickly and easily.

What is % of ?
is what percent of ?
What is the percentage increase/decrease from to ?

Tips: Use tab to move to the next field. Use shift-tab to move to the previous field. Press enter to calculate.

About

Our online percentage calculator is designed to help you quickly and accurately calculate percentages for any purpose. Whether you need to find a discount, calculate a tip, or determine percentage increases or decreases, this tool makes it fast and simple. Perfect for shopping, budgeting, business, or everyday math.

FAQ

What is a percentage?

A percentage is a way of expressing a number as a fraction of 100, making it easier to understand proportions and comparisons. It’s widely used in everyday life to represent parts of a whole or to compare values. Percentages are written using the "%" symbol. For example, if a garage contains 100 cars and 25 of them are white, we say that 25% of the cars are white.

How do you calculate a percentage?

To calculate a percentage, divide the part (the smaller number) by the whole (the total amount), then multiply the result by 100. This gives you the percentage as a number between 0 and 100. For example: If you have 50 apples and 20 of them are red, divide 20 by 50 to get 0.4, then multiply by 100. 0.4 × 100 = 40% So, 40% of the apples are red.

Why percentages matter?

Percentages are used in many real-life situations—from calculating discounts, taxes, and tips to analyzing stock market changes and economic indicators. Understanding how percentages work can help you make smarter, more informed decisions in areas like personal finance, business management, shopping, and data analysis.

Calculation Samples

Discount Calculator

Calculate discounts and savings on purchases

Example: 20% off $100 = $20 savings

Tip Calculator

Calculate tips for restaurants and services

Example: 15% tip on $50 = $7.50

Grade Calculator

Calculate test scores and grades

Example: 85/100 = 85%

Tax Calculator

Calculate taxes and final prices

Example: $100 + 8.25% tax = $108.25

Interest Calculator

Calculate simple interest on investments

Example: $1000 at 5% = $50 interest

Growth Calculator

Calculate percentage increase/decrease

Example: From $100 to $120 = 20% increase

Commission Calculator

Calculate sales commissions and earnings

Example: 5% commission on $2000 = $100

Markup Calculator

Calculate markup percentage and selling price

Example: Cost $50, 40% markup = $70 price

Profit Margin Calculator

Calculate profit margins and percentages

Example: Revenue $1000, Cost $700 = 30% margin

BMI Calculator

Calculate Body Mass Index and percentiles

Example: 70kg, 175cm = BMI 22.9

Budget Calculator

Calculate budget percentages and allocations

Example: $500 of $2000 = 25% of budget

Investment Calculator

Calculate investment returns and percentages

Example: $1000 to $1200 = 20% return

Percentage Calculator – Quick & Accurate Online Tool

PercentageFinder.net is a free online percentage calculator designed for fast and accurate percentage calculations. Whether you want to know “What is X% of Y?”, convert a value into a percentage, or calculate percentage increase/decrease, this user-friendly tool gets you the answer in seconds.


All you need to do is enter two values, click Calculate, and the result will instantly appear in the third field. You can also test different combinations to see how the calculator works. A calculation history feature lets you easily track your previous results, making repeated calculations simple.


1. Calculate Value from a Percentage

The formula for finding the value based on a percentage is: V = P% × X

Example – 20% of 300:


  1. Formula: V = P% × X, where P = 20% and X = 300.
  2. Substitute values: V = 20% × 300.
  3. Convert 20% to decimal: 0.20.
  4. Multiply: 0.20 × 300 = 60.
  5. Result: 20% of 300 is 60.

Using the Percentage Calculator:
- Enter 20 in the first field.
- Enter 300 in the second field.
- The calculator will return 60, matching the manual calculation.


2. Convert a Value to a Percentage

The easiest method to convert a value into a percentage is: P = (X₁ / X₂) × 100
This means X₁ is P percent of X₂.

Example – 80 is what percentage of 200:


  1. Formula: P = (X₁ / X₂) × 100.
  2. Here, X₁ = 80 and X₂ = 200.
  3. Divide: 80 ÷ 200 = 0.40.
  4. Multiply by 100: 0.40 × 100 = 40%.
  5. Result: 80 is 40% of 200.

Using the Percentage Calculator:
- Enter 80 in the first field.
- Enter 200 in the second field.
- The result 40% will appear instantly.


3. Calculate Percentage Increase or Decrease

The formula for finding percentage change is: P = (V₂ – V₁) / V₁ × 100

Example 1 – Price Increase (200 to 240):


  1. Formula: P = (240 – 200) / 200 × 100.
  2. Calculation: 40 ÷ 200 × 100 = 20%.
  3. Result: Price increased by 20%.

Example 2 – Price Decrease (200 to 180):

  1. Formula: P = (180 – 200) / 200 × 100.
  2. Calculation: -20 ÷ 200 × 100 = -10%.
  3. Result: Price decreased by 10%.

Using the Calculator:
- Enter 200 and 240 → Result: 20% increase.
- Enter 200 and 180 → Result: -10% decrease.


4. Everyday Uses of the Percentage Calculator

Understanding percentage calculations improves decision-making in budgeting, data analysis, and price comparisons.


5. What is a Percentage?

A percentage expresses a number as a fraction of 100.

Percentages are widely used to express probabilities, academic grades, financial changes, and much more.