SOL 8.CE.1.c Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a way to express how much a quantity has increased or decreased in relation to its original amount, calculated as (New Value - Old Value) / Old Value x 100%.

Front

How do you calculate Percent Decrease?

Back

Percent Decrease = (Old Value - New Value) / Old Value x 100%.

Front

How do you calculate Percent Increase?

Back

Percent Increase = (New Value - Old Value) / Old Value x 100%.

Front

If a video game level time decreased from 32 minutes to 28 minutes, what is the percent of change?

Back

Decrease 12.5%.

Front

What is the percent decrease if a population drops from 580 to 350?

Back

Approximately 40%.

Front

If the number of dogs decreased from 20 to 5, what is the percent of change?

Back

Decrease 75%.

Front

What is the percent increase if Ann's hourly wage goes from $10.00 to $12.00?

Back

Increase 20%.

Front

If bee hives decreased from 276 to 125, what is the percent decrease?

Back

Approximately 55%.

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change in the value.

Front

What is the formula for finding the new value after a percent increase?

Back

New Value = Old Value + (Old Value x Percent Increase).