# Percent Change - PowerPoint PPT Presentation

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Percent Change. Percent Change. A percentage change is a way to express a change between the old value and the new one (which is the extent to which something gains or loses value.) Percent changes are useful to help people understand changes in a value over time. . PERCENT CHANGE.

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Percent Change

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Percent Change

### Percent Change

• A percentage change is a way to express a change between the old value and the new one (which is the extent to which something gains or loses value.)

• Percent changes are useful to help people understand changes in a value over time.

### PERCENT CHANGE

PERCENT INCREASE

PERCENT DECREASE

WHEN THE VALUE OF AN ITEM GOES DOWN

• WHEN THE VALUEE OF AN ITEM GOES UP

### EXAMPLE

Andrew works in a supermarket for \$10.00 per hour. He now gets paid \$12.00 per hour.

Is this a percent increase or decrease?

INCREASE!

### EXAMPLE

The staff at a company went from 40 to 30 employees. Is this a percent increase or decrease?

DECREASE!

### What is the percent decrease in staff?

• Andrew works in a supermarket for \$12.00 per hour. He was given a 4.5% raise due to his hard work and coming to work on time. What is his new pay?