Percent of Change

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%.

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

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

Percent Increase = (75 - 50) / 50 x 100% = 50%.

Percent Decrease = (80 - 60) / 80 x 100% = 25%.

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

If a store's sales increased from $2000 last month to $3000 this month, the percent increase is (3000 - 2000) / 2000 x 100% = 50%.

If a car's value decreased from $20,000 to $15,000, the percent decrease is (20000 - 15000) / 20000 x 100% = 25%.

A percent change of 0% means that there has been no increase or decrease in the quantity; it remains the same.

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