HSC Together Year 11 Maths Standard: Percentage Increase or Decrease

#### Maths Standard

• Earning and Managing Money
• Formulae and Equations
• Measurement and Energy
• Relative Frequency and Probability
• Perimeter, Area and Volume
• Classifying and Representing Data
• Linear Relationships
• Interest and Depreciation
• Exploring and Describing Data
• Working with Time
• Budgeting and Household Expenses
• Back to other subjects
Back to other subjects

# Percentage Increase or Decrease

### What is percentage increase and decrease?

Percentage change involves increasing or decreasing a quantity as a percentage of the original amount of the quantity. This is often used in retail stores selling products that need to increase the price of a product in order to make a profit or decrease the price of a product if it is on sale. This post will help you with percentage increase and decrease in Prelim Standard Math.

### How do you increase or decrease the value of a product?

The video below explains how to complete percentage increase and decrease questions.

### What happens when you increase and then decrease a price by the same percentage?

The following video explains why you get a completely different price when you increase the price of a product and then decrease it by the same percentage but get a whole new number.

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