21.02% is the change from 685 to 829
Calculation steps:
[( 829 - 685 ) ÷ 685] x 100 = 21.02%
Formula
Percentage change = [(829 - 685) / 685] x 100
Subtract the new number by the original number
829 - 685 = 144
144 ÷ 685 = 0.21021897810218979
0.21021897810218979 x 100 = 21.02%