-96.74% is the change from 858 to 28
Calculation steps:
[( 28 - 858 ) ÷ 858] x 100 = -96.74%
Formula
Percentage change = [(28 - 858) / 858] x 100
Subtract the new number by the original number
28 - 858 = -830
-830 ÷ 858 = -0.9673659673659674
-0.9673659673659674 x 100 = -96.74%