-21.24% is the change from 791 to 623
Calculation steps:
[( 623 - 791 ) ÷ 791] x 100 = -21.24%
Formula
Percentage change = [(623 - 791) / 791] x 100
Subtract the new number by the original number
623 - 791 = -168
-168 ÷ 791 = -0.21238938053097345
-0.21238938053097345 x 100 = -21.24%