35.16% is the change from 603 to 815
Calculation steps:
[( 815 - 603 ) ÷ 603] x 100 = 35.16%
Formula
Percentage change = [(815 - 603) / 603] x 100
Subtract the new number by the original number
815 - 603 = 212
212 ÷ 603 = 0.351575456053068
0.351575456053068 x 100 = 35.16%