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 Increase?

Back

Percent Increase = (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

What is 25% of 80?

Back

20

Front

What is 20% of 75?

Back

15

Front

What is 90% of 250?

Back

225

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 4% = 4/100 = 0.04.

Front

What is the formula for finding the original value when given the percent change?

Back

Original Value = New Value / (1 + Percent Change) for increase, or Original Value = New Value / (1 - Percent Change) for decrease.

Front

If a price increases from $50 to $70, what is the percent increase?

Back

Percent Increase = (70 - 50) / 50 x 100% = 40%.

Front

If a price decreases from $100 to $80, what is the percent decrease?

Back

Percent Decrease = (100 - 80) / 100 x 100% = 20%.