Enter the first value and the second value into the Percentage Rate Calculator. The calculator will evaluate the Percentage Rate. 

Percentage Rate Formula

The following two example problems outline the steps and information needed to calculate the Percentage Rate.

PR = (V2-V1) / V1 * 100
  • Where PR is the Percentage Rate (%)
  • V2 is the first value 
  • V1 is the second value 

To calculate the percentage rate, divide the change in value by the initial value, then multiply by 100.

How to Calculate Percentage Rate?

The following example problems outline how to calculate Percentage Rate.

Example Problem #1:

  1. First, determine the first value.
    • The first value is given as: 100.
  2. Next, determine the second value.
    • The second value is provided as: 70.
  3. Finally, calculate the Percentage Rate using the equation above: 

PR = (V2-V1) / V1 * 100

The values provided above are inserted into the equation below and computed.

PR = (100-70) / 70 * 100 = 42.85 (%)

Example Problem #2: 

For this problem, the variables required are provided below:

first value = 200

second value = 40

Test your knowledge using the equation and check your answer with the calculator.

PR = (V2-V1) / V1 * 100 = ?