29.41% is the change from 646 to 836
Calculation steps:
[( 836 - 646 ) ÷ 646] x 100 = 29.41%
Formula
Percentage change = [(836 - 646) / 646] x 100
Subtract the new number by the original number
836 - 646 = 190
190 ÷ 646 = 0.29411764705882354
0.29411764705882354 x 100 = 29.41%