7.57% is the change from 621 to 668
Calculation steps:
[( 668 - 621 ) ÷ 621] x 100 = 7.57%
Formula
Percentage change = [(668 - 621) / 621] x 100
Subtract the new number by the original number
668 - 621 = 47
47 ÷ 621 = 0.07568438003220612
0.07568438003220612 x 100 = 7.57%