10.31% is the change from 621 to 685
Calculation steps:
[( 685 - 621 ) ÷ 621] x 100 = 10.31%
Formula
Percentage change = [(685 - 621) / 621] x 100
Subtract the new number by the original number
685 - 621 = 64
64 ÷ 621 = 0.10305958132045089
0.10305958132045089 x 100 = 10.31%