π bbc.co.uk
Compound appreciation and depreciation - Percentage change - WJEC - GCSE Maths Numeracy (WJEC) Revision - BBC Bitesize
Practise using percentages to calculate the value of an item once a discount has been applied or a tax has been added.
β https://www.bbc.co.uk/bitesize/guides/zw4nv4j/revision/5