31.38% is the change from 615 to 808
Calculation steps:
[( 808 - 615 ) ÷ 615] x 100 = 31.38%
Formula
Percentage change = [(808 - 615) / 615] x 100
Subtract the new number by the original number
808 - 615 = 193
193 ÷ 615 = 0.31382113821138213
0.31382113821138213 x 100 = 31.38%