Percent of Change

Front

What is Percent of Change?

Back

Percent of Change is a measure that describes how much a quantity has increased or decreased in relation to its original amount, expressed as a percentage.

Front

How do you calculate Percent of Change?

Back

Percent of Change = ((New Amount - Original Amount) / Original Amount) x 100.

Front

If the original amount is 50 and the new amount is 75, what is the percent of change?

Back

Percent of Change = ((75 - 50) / 50) x 100 = 50% increase.

Front

If the original amount is 100 and the new amount is 80, what is the percent of change?

Back

Percent of Change = ((80 - 100) / 100) x 100 = -20% (20% decrease).

Front

What does a positive percent of change indicate?

Back

A positive percent of change indicates an increase in the quantity.

Front

What does a negative percent of change indicate?

Back

A negative percent of change indicates a decrease in the quantity.

Front

Calculate the percent of change from 30 to 45.

Back

Percent of Change = ((45 - 30) / 30) x 100 = 50% increase.

Front

Calculate the percent of change from 90 to 60.

Back

Percent of Change = ((60 - 90) / 90) x 100 = -33.33% (33.33% decrease).

Front

If a class has 20 students and gains 5 more, what is the percent of change?

Back

Percent of Change = ((25 - 20) / 20) x 100 = 25% increase.

Front

If a product's price drops from $50 to $30, what is the percent of change?

Back

Percent of Change = ((30 - 50) / 50) x 100 = -40% (40% decrease).