-23.51% is the change from 621 to 475
Calculation steps:
[( 475 - 621 ) ÷ 621] x 100 = -23.51%
Formula
Percentage change = [(475 - 621) / 621] x 100
Subtract the new number by the original number
475 - 621 = -146
-146 ÷ 621 = -0.23510466988727857
-0.23510466988727857 x 100 = -23.51%