-85.08% is the change from 858 to 128
Calculation steps:
[( 128 - 858 ) ÷ 858] x 100 = -85.08%
Formula
Percentage change = [(128 - 858) / 858] x 100
Subtract the new number by the original number
128 - 858 = -730
-730 ÷ 858 = -0.8508158508158508
-0.8508158508158508 x 100 = -85.08%