35.1% is the change from 604 to 816
Calculation steps:
[( 816 - 604 ) ÷ 604] x 100 = 35.1%
Formula
Percentage change = [(816 - 604) / 604] x 100
Subtract the new number by the original number
816 - 604 = 212
212 ÷ 604 = 0.3509933774834437
0.3509933774834437 x 100 = 35.1%