34.62% is the change from 621 to 836
Calculation steps:
[( 836 - 621 ) ÷ 621] x 100 = 34.62%
Formula
Percentage change = [(836 - 621) / 621] x 100
Subtract the new number by the original number
836 - 621 = 215
215 ÷ 621 = 0.3462157809983897
0.3462157809983897 x 100 = 34.62%