-99% is the change from 804 to 8
Calculation steps:
[( 8 - 804 ) ÷ 804] x 100 = -99%
Formula
Percentage change = [(8 - 804) / 804] x 100
Subtract the new number by the original number
8 - 804 = -796
-796 ÷ 804 = -0.9900497512437811
-0.9900497512437811 x 100 = -99%