GCSE Maths - Percentage Increase and Decrease (Multiplier Method) (2026/27 exams)

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** WHAT'S COVERED **
1. Calculating percentage increases and decreases using two different methods.
2. Method 1: Finding the percentage value and adding/subtracting it from the original amount.
3. Method 2: Using the multiplier method.
4. Common pitfalls and special cases with the multiplier method.
Handling percentage changes less than 10%.
Handling percentage increases greater than 100%.

** EXAM BOARD INFO **
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - Not on your course

** CHAPTERS **
0:00 Introto Percentage Increases and Decreases
0:20 Two Methods Overview
0:37 Method 1: Simple Calculation (Increase Example)
1:33 Method 1: Simple Calculation (Decrease Example)
2:13 Method 1: Contextual Example
3:26 Method 2: Multiplier Method Introduction
4:01 Multiplier Method (Increase Example 1)
4:38 Multiplier Method (Increase Example 2)
5:09 Multiplier Method (Decrease Example)
5:43 Multiplier Method: Percentages less than 10%
6:35 Multiplier Method: Increases over 100%

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