8.05% is the change from 621 to 671
Calculation steps:
[( 671 - 621 ) ÷ 621] x 100 = 8.05%
Formula
Percentage change = [(671 - 621) / 621] x 100
Subtract the new number by the original number
671 - 621 = 50
50 ÷ 621 = 0.08051529790660225
0.08051529790660225 x 100 = 8.05%