-99.07% is the change from 859 to 8
Calculation steps:
[( 8 - 859 ) ÷ 859] x 100 = -99.07%
Formula
Percentage change = [(8 - 859) / 859] x 100
Subtract the new number by the original number
8 - 859 = -851
-851 ÷ 859 = -0.9906868451688009
-0.9906868451688009 x 100 = -99.07%