Step 1: Calculate the change in value
Step 2: Divide by the original value (i.e. the value before increase or decrease)
Step 3: Multiply by 100%
Percentage increase =
Example:
What is the percentage increase from 25 to 29.5?
Solution:
Increase = 29.5 – 25 = 4.5
Percentage increase =
Example:
Last month, Zack earned $500. This month he earned $520. Calculate the percentage increase in his earnings.
Solution :
Increase = $520 – $500 = RM20
Percentage increase =
The percentage increase in his earnings is 4%.
Example:
What is the percentage decrease from 20 to 15 ?
Solution:
Decrease = 20 – 15 = 4
=
Percentage decrease = = 24%
Example:
Last month, Paul earned $500. This month he earned $450. Calculate the percentage decrease in his earnings.
Solution :
Decrease = RM500 – RM450 = RM50
Percentage decrease =
The percentage decrease in his earnings is 10%.
The following video shows more examples of percentage problems
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.