-73.59% is the change from 621 to 164
Calculation steps:
[( 164 - 621 ) ÷ 621] x 100 = -73.59%
Formula
Percentage change = [(164 - 621) / 621] x 100
Subtract the new number by the original number
164 - 621 = -457
-457 ÷ 621 = -0.7359098228663447
-0.7359098228663447 x 100 = -73.59%