37.4% is the change from 615 to 845
Calculation steps:
[( 845 - 615 ) ÷ 615] x 100 = 37.4%
Formula
Percentage change = [(845 - 615) / 615] x 100
Subtract the new number by the original number
845 - 615 = 230
230 ÷ 615 = 0.37398373983739835
0.37398373983739835 x 100 = 37.4%