8.37% is the change from 621 to 673
Calculation steps:
[( 673 - 621 ) ÷ 621] x 100 = 8.37%
Formula
Percentage change = [(673 - 621) / 621] x 100
Subtract the new number by the original number
673 - 621 = 52
52 ÷ 621 = 0.08373590982286634
0.08373590982286634 x 100 = 8.37%