-26.57% is the change from 621 to 456
Calculation steps:
[( 456 - 621 ) ÷ 621] x 100 = -26.57%
Formula
Percentage change = [(456 - 621) / 621] x 100
Subtract the new number by the original number
456 - 621 = -165
-165 ÷ 621 = -0.26570048309178745
-0.26570048309178745 x 100 = -26.57%