## Elementary Algebra

The number of parking spaces changed from 8400 spaces to 11088 spaces. To find the percentage change, we use the following formula: percentage change= $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100% The number of parking spaces was 8400, and the ending number of spaces became 11088. Substitute these values into the formula: percentage change = $\frac{11088\ -\ 8400}{8400}$ $\times$ 100% percentage change = $\frac{2688}{8400}$ $\times$ 100% percentage change = 0.32 $\times$ 100% percentage change = 32% The percentage change in the number of parking spaces is 32%. Because the percentage change is a positive number, it is a percent increase.