33.71% is the change from 620 to 829
Calculation steps:
[( 829 - 620 ) ÷ 620] x 100 = 33.71%
Formula
Percentage change = [(829 - 620) / 620] x 100
Subtract the new number by the original number
829 - 620 = 209
209 ÷ 620 = 0.3370967741935484
0.3370967741935484 x 100 = 33.71%