Enter the current value and the initial value into the Reduction Rate Calculator. The calculator will evaluate the Reduction Rate. 

Reduction Rate Formula

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

RR = (IV -CV) / IV * 100

  • Where RR is the Reduction Rate (%)
  • CV is the current value 
  • IV is the initial value 

How to Calculate Reduction Rate?

The following example problems outline how to calculate Reduction Rate.

Example Problem #1:

  1. First, determine the current value. 
    • The current value is given as: 30.
  2. Next, determine the initial value. 
    • The initial value is provided as: 50.
  3. Finally, calculate the Reduction Rate using the equation above: 

RR = (IV -CV) / IV * 100

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

RR = (50 -30) / 50 * 100 = 40.00 (%)


Example Problem #2: 

For this problem, the variables required are provided below:

current value = 40

initial value = 100

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

RR = (IV -CV) / IV * 100 = ?