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 - Original Value) / Original Value x 100%.

Front

How do you calculate Percent Decrease?

Back

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

Front

How do you calculate Percent Increase?

Back

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

Front

If a product's price goes from $50 to $40, what is the percent decrease?

Back

Percent Decrease = (50 - 40) / 50 x 100% = 20%.

Front

If a student's score increases from 70 to 85, what is the percent increase?

Back

Percent Increase = (85 - 70) / 70 x 100% = 21.43%.

Front

What does it mean if the percent of change is positive?

Back

A positive percent of change indicates an increase in value.

Front

What does it mean if the percent of change is negative?

Back

A negative percent of change indicates a decrease in value.

Front

How do you determine if a change is an increase or decrease?

Back

Compare the new value to the original value: if the new value is greater, it's an increase; if it's less, it's a decrease.

Front

What is the percent change if the original price is $80 and the new price is $100?

Back

Percent Increase = (100 - 80) / 80 x 100% = 25%.

Front

What is the percent change if the original number of shirts sold is 300 and it decreases to 150?

Back

Percent Decrease = (300 - 150) / 300 x 100% = 50%.