-99.01% is the change from 805 to 8
Calculation steps:
[( 8 - 805 ) ÷ 805] x 100 = -99.01%
Formula
Percentage change = [(8 - 805) / 805] x 100
Subtract the new number by the original number
8 - 805 = -797
-797 ÷ 805 = -0.9900621118012423
-0.9900621118012423 x 100 = -99.01%