-99.88% is the change from 867 to 1
Calculation steps:
[( 1 - 867 ) ÷ 867] x 100 = -99.88%
Formula
Percentage change = [(1 - 867) / 867] x 100
Subtract the new number by the original number
1 - 867 = -866
-866 ÷ 867 = -0.9988465974625144
-0.9988465974625144 x 100 = -99.88%