-99.88% is the change from 806 to 1
Calculation steps:
[( 1 - 806 ) ÷ 806] x 100 = -99.88%
Formula
Percentage change = [(1 - 806) / 806] x 100
Subtract the new number by the original number
1 - 806 = -805
-805 ÷ 806 = -0.9987593052109182
-0.9987593052109182 x 100 = -99.88%