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.