-99.06% is the change from 853 to 8
Calculation steps:
[( 8 - 853 ) ÷ 853] x 100 = -99.06%
Formula
Percentage change = [(8 - 853) / 853] x 100
Subtract the new number by the original number
8 - 853 = -845
-845 ÷ 853 = -0.9906213364595545
-0.9906213364595545 x 100 = -99.06%