# Finding the Original Amount – Percentage Changes

Students learn how to calculate the original amount after a simple percentage change.  Learning progresses from using a visual method to solving real life problems using written methods.The start of the lesson recaps calculating a simple percentage increase and increase using multipliers.  In the plenary students are challenged to use reverse percentages to find the original amount after a discount.
##### Differentiated Learning Objectives
• All students should be able to calculate the original amount after a percentage increase.
• Most students should be able to calculate the original amount after a percentage change.
• Some students should be able to calculate the original amount after a repeated percentage change.

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