Percent of Decrease

Percent Increase and Decrease

EQ: How do you use percents to describe change?

Take out your notes to use on today's practice questions.

Multiple Choice

What is the correct Percent Change equation? 

Percent of change = _____

• $$\ \frac{original\ amount}{amount\ of\ change}$$  

• $$\ \frac{percent\ change}{original\ amount}$$  

• $$\ \frac{amount\ of\ change}{original\ amount}$$  

• $$\ \frac{original\ amount}{percent\ of\ change}$$  

Multiple Choice

If you have a percent increase problem, your original amount:

• Gets bigger

• Gets smaller

• Doesn't change

• Stays the same

The following questions are about

Using Percent of Change to Calculate a New Amount

(use your notes!)

Multiple Choice

If there are 200 people that like tea more than coffee, but that number decreases by 60%, how many people still prefer tea to coffee?

• 80

• 60

• 120

• 140

Open Ended

How well do you think you understand this material? What do you need the most practice with to be prepared for next week's test?