Percentage Calculators For Common Phrases

What is
of
?
Answer: 3 is 10% of 30
is
of what?
Answer: 10 is 20% of 50
is what % of
?
Answer: 4 is 40% of 10.

Percent Change/Increase/Decrease Calculator

From
To
Answer:
  • 60% Change
  • 60% Increase
  • -60% Decrease
  • Percent Difference Calculator

    v1
    v2
    Percent Difference:

    46.1538%

    Calculating Percentages

    While our percentage calculator is a handy way to solve your percentage problems, we'll explain the math involved in all of the calculations below.

    How to Find Percentage of a Number

    This section explains how to answer the question "What is p% of x?".

    The formula to find the percentage of a number is:

    p% * x = y

    Example: What's 10% of 30? Using the percentage formula: p% * x = y:

    1. For this example, our equation is 10% * 30 = y
    2. To start, convert the percentage (p) to a decimal by removing the percent sign (%) and dividing the number by 100. For our example: 10 / 100 = 0.1 
    3. To find y, multiply the decimal form of the percentage by x. In this case: 0.1 * 30 = 3

    In the example above, y = 3. In other words, 10% of 30 is 3.

    10% * 30 = y

    0.1 * 30 = 3

    How to Solve "x is p% of what?"

    The formula for calculating "x is p% of what?" is:

    x / p% = y

    Example: 10 is 20% of what? using the formula x / p% = y:

    1. For this example, our equation is 10 / 20% = y
    2. To start, convert our percentage to a decimal by removing the percent sign and dividing it by 100. In this case, 20 / 100 = 0.2.
    3. Divide x by the decimal form of the percentage: 10 / 0.2 = 50

    In this example, 10 is 20% of 50.

    10 / 20% = y

    10 / 0.2 = 50

    How to Solve "x is What Percent of y?"

    The formula for calculating "x is what percent of y?" is:

    x / y = p%

    Example: 4 is what percent of 10? Using the formula: x / y = p%

    1. For this example, our equation is 4 / 10 = p%
    2. 4 divided by 10 = 0.4 Note: This is in decimal form!
    3. To convert the decimal to a percentage, multiply 0.4 * 100 = 40%.

    In this example, 4 is 40% of 10.

    4 / 10 = p%

    .4 * 100 = 40%

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