-99.01% is the change from 806 to 8
Calculation steps:
[( 8 - 806 ) ÷ 806] x 100 = -99.01%
Formula
Percentage change = [(8 - 806) / 806] x 100
Subtract the new number by the original number
8 - 806 = -798
-798 ÷ 806 = -0.9900744416873449
-0.9900744416873449 x 100 = -99.01%