## Elementary Algebra

To find the percentage change, we use the following formula: percentage change = $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100% The original price of the access code was 60 dollars. The new price became 48 dollars. We substitute these values in the formula to obtain: percentage change = $\frac{48\ -\ 60}{60}$ $\times$ 100% percentage change = $\frac{-12}{60}$ $\times$ 100% percentage change = -0.2 $\times$ 100% percentage change = -20% Because the percentage change is a negative number, it is a percent decrease.