-99.88% is the change from 812 to 1
Calculation steps:
[( 1 - 812 ) ÷ 812] x 100 = -99.88%
Formula
Percentage change = [(1 - 812) / 812] x 100
Subtract the new number by the original number
1 - 812 = -811
-811 ÷ 812 = -0.9987684729064039
-0.9987684729064039 x 100 = -99.88%