-27.39% is the change from 858 to 623
Calculation steps:
[( 623 - 858 ) ÷ 858] x 100 = -27.39%
Formula
Percentage change = [(623 - 858) / 858] x 100
Subtract the new number by the original number
623 - 858 = -235
-235 ÷ 858 = -0.2738927738927739
-0.2738927738927739 x 100 = -27.39%