What percentage change measures
What percentage change measures

Percentage change tells you how big a change is compared with what you started with. That is why a £20 change can be tiny in one question but huge in another.
Step-by-step lessons on Edexcel IGCSE Maths Percentage Change. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.