7.4D Flashcard

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 of change?

Back

Percent of change = ((New Value - Old Value) / Old Value) x 100.

Front

If 72 people got a speeding ticket one week and 36 the next week, what is the percent of change?

Back

Decrease 50%.

Front

What is the formula for calculating percent decrease?

Back

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

Front

If a shirt costs $36 and is on sale for $24, what is the percent decrease?

Back

33%.

Front

What does a percent increase indicate?

Back

A percent increase indicates how much a value has grown compared to its original amount.

Front

If Mrs. Ciampa had 27 students last year and 30 this year, what is the percent of change?

Back

11% increase.

Front

What is the percent of change if Mary lost 30 pounds from 180 pounds?

Back

17% Decrease.

Front

What is the difference between percent increase and percent decrease?

Back

Percent increase measures growth, while percent decrease measures reduction.

Front

How do you express a 50% decrease in terms of original value?

Back

If the original value is 100, a 50% decrease means the new value is 50.