-21.69% is the change from 793 to 621
Calculation steps:
[( 621 - 793 ) ÷ 793] x 100 = -21.69%
Formula
Percentage change = [(621 - 793) / 793] x 100
Subtract the new number by the original number
621 - 793 = -172
-172 ÷ 793 = -0.21689785624211855
-0.21689785624211855 x 100 = -21.69%