-99.31% is the change from 871 to 6
Calculation steps:
[( 6 - 871 ) ÷ 871] x 100 = -99.31%
Formula
Percentage change = [(6 - 871) / 871] x 100
Subtract the new number by the original number
6 - 871 = -865
-865 ÷ 871 = -0.9931113662456946
-0.9931113662456946 x 100 = -99.31%