Worksheet

Multi-step Percent Increase And Decrease Worksheet

4 problems

Percentage increase is the change in the value when it is increased over a period of time. Population increase and increase in the literacy rate are examples of percentage increases. On the other hand, a percentage decrease is a change in the value when it is decreased over a period of time. Decrease in the level of covid-patients or decrease in the rainfall rate are examples of percentage decreases. 
 

There are some steps that you should keep in mind while solving a question on 

percentage increase or decrease.


 

Grade 7
Percents

Teaching Percentage Increase and Decrease Easily

 

  • Firstly, subtract the increased value by the original value or the original value by decreased value. 
     
  • Then, divide those values by the original value. 

 

  • Lastly, multiply the obtained value by 100. 

     

Percentage Increase =  (Increased Value-Original value)/Original value × 100

Percentage decrease = (Original value-Decreased Value)/Original Value × 100


 

 

 

 

 

Here is an example of solving a question on percentage decrease. Let’s look at the given example below to understand the percentage increase and decrease. 


 

Q. Amrita received a monthly salary of $ 1800. Her salary was decreased by $ 300. What was the percentage decrease in her salary? 


 

Monthly Salary = $ 1800 


 

Salary Increased = $ 300 


 

Step 1: Subtract the original value by the decreased value. 

So, 1800 - 300 = 1500. 


 

Step 2: Divide the obtained va...

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