4.19% is the change from 621 to 647
Calculation steps:
[( 647 - 621 ) ÷ 621] x 100 = 4.19%
Formula
Percentage change = [(647 - 621) / 621] x 100
Subtract the new number by the original number
647 - 621 = 26
26 ÷ 621 = 0.04186795491143317
0.04186795491143317 x 100 = 4.19%