-99.02% is the change from 818 to 8
Calculation steps:
[( 8 - 818 ) ÷ 818] x 100 = -99.02%
Formula
Percentage change = [(8 - 818) / 818] x 100
Subtract the new number by the original number
8 - 818 = -810
-810 ÷ 818 = -0.9902200488997555
-0.9902200488997555 x 100 = -99.02%