Percent of change check for understanding

Front

What is percent of change?

Back

Percent of change is a way to express the difference between an old value and a new value as a percentage of the old value.

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 gas prices decreased from $3.89 to $2.99, what is the percent decrease?

Back

23%.

Front

If Mrs. Ciampa's class size increased from 27 to 30, what is the percent of change?

Back

11%.

Front

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

Back

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

Front

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

Back

New Value = Old Value - (Old Value x Percent Decrease).

Front

If the population of a town increased from 82,000 to 87,000, what is the percent increase?

Back

6%.

Front

If you wrote 5 pages yesterday and 18 pages today, what is the percent increase in productivity?

Back

260%.

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change between the old value and the new value.