Percentage Calculator

The Percentage Calculator tool to calculate percentages, calculating discounts, calculating tips, or figure out how much something has increased or decreased in percent.

Percentage calculator What is % of
How to use?
  • Input-1: Percentage value.
    You can calculate discounts, taxes, tips, interest rates, or any other percentage-based values.
    Example: To calculate 10% of $100, input 10 for percentage here.
  • Input-2: Total amount.
    This could be the original price, total quantity, total weight, total value, or any numeric value you want to calculate a percentage for.
    Example: To calculate 10% of $100, input 100 for amount here.
Find percentage is what percentage of
How to use?
  • Input-1: Smaller value.
    You can calculate percentages, ratios, proportions, or any other comparison between two numbers.
  • Input-2: Larger value.
    You can find out what percentage one number represents of another, compare values, or analyze proportions.
Percentage increase decrease

What is the percentage increase/decrease

from to
How to use?
  • Input-1: Old value.
    This could be the starting value of rent, weight, stock price, quantity, or any initial measurement.
    Example: To calculate weight loss input start weight here.
  • Input-2: New value.
    This represents the ending rent, weight, stock price, quantity, or any final measurement.
    Example: To calculate weight loss input current weight here.

How To Calculate Percentages?

Here’s a straightforward guide on how to calculate percentages with formulas and examples:

1. Understanding the Basics:

  • What is a Percentage?: A percentage is a proportion or a fraction of 100. It represents a part of a whole expressed in terms of one hundred.
  • Percentage Formula: The basic formula to calculate a percentage is: Percentage = ( Part / Whole ) × 100%

2. Steps to Calculate Percentages:

  • Identify the Whole: Determine the total or the whole amount. This represents 100%.
  • Determine the Part: Find the portion or the part of the whole that you want to express as a percentage.
  • Apply the Formula: Use the formula above to calculate the percentage by dividing the part by the whole and multiplying by 100%.

3. Examples:

Example 1: Calculating a Percentage of a Whole:

  • Problem: What is 20% of 150?
  • Solution:
    • Step 1: Identify the whole: Whole = 150
    • Step 2: Determine the part: 20% of 150
    • Step 3: Apply the formula:
      Percentage = ( 20 / 150 ) × 100% = ( 20 / 150 ) × 100 = 13.33%
    • Answer: 20% of 150 is 30.

Example 2: Finding the Percentage Change:

  • Problem: If a stock’s value increased from $50 to $60, what is the percentage increase?
  • Solution:
    • Step 1: Identify the initial value (old value) and the final value (new value):
      Old value = 50, New value = 60
    • Step 2: Determine the change: Change = New value − Old value = 60 −  50 = 10
    • Step 3: Apply the formula:
      Percentage change = ( Change / Old value ) × 100% = ( 10 / 50 ) × 100 = 20%
    • Answer: The percentage increase is 20%.

4. Additional Tips:

  • Percentage Increase/Decrease: When finding the percentage increase, the formula is ( New Value − Old Value ) / Old Value × 100. For a percentage decrease, it’s ( Old Value − New Value ) / Old Value × 100.
  • Converting a Percentage to a Decimal: Divide the percentage by 100 to convert it to a decimal. For example, 20% is 0.20 in decimal form.

Calculating percentages enables data interpretation and decision-making; use this guide for efficient percentage calculations.