-99.01% is the change from 808 to 8
Calculation steps:
[( 8 - 808 ) ÷ 808] x 100 = -99.01%
Formula
Percentage change = [(8 - 808) / 808] x 100
Subtract the new number by the original number
8 - 808 = -800
-800 ÷ 808 = -0.9900990099009901
-0.9900990099009901 x 100 = -99.01%