34.84% is the change from 508 to 685
Calculation steps:
[( 685 - 508 ) ÷ 508] x 100 = 34.84%
Formula
Percentage change = [(685 - 508) / 508] x 100
Subtract the new number by the original number
685 - 508 = 177
177 ÷ 508 = 0.3484251968503937
0.3484251968503937 x 100 = 34.84%