-99.88% is the change from 807 to 1
Calculation steps:
[( 1 - 807 ) ÷ 807] x 100 = -99.88%
Formula
Percentage change = [(1 - 807) / 807] x 100
Subtract the new number by the original number
1 - 807 = -806
-806 ÷ 807 = -0.9987608426270136
-0.9987608426270136 x 100 = -99.88%