-22.14% is the change from 858 to 668
Calculation steps:
[( 668 - 858 ) ÷ 858] x 100 = -22.14%
Formula
Percentage change = [(668 - 858) / 858] x 100
Subtract the new number by the original number
668 - 858 = -190
-190 ÷ 858 = -0.22144522144522144
-0.22144522144522144 x 100 = -22.14%