33.58% is the change from 685 to 915
Calculation steps:
[( 915 - 685 ) ÷ 685] x 100 = 33.58%
Formula
Percentage change = [(915 - 685) / 685] x 100
Subtract the new number by the original number
915 - 685 = 230
230 ÷ 685 = 0.3357664233576642
0.3357664233576642 x 100 = 33.58%