-99.54% is the change from 871 to 4
Calculation steps:
[( 4 - 871 ) ÷ 871] x 100 = -99.54%
Formula
Percentage change = [(4 - 871) / 871] x 100
Subtract the new number by the original number
4 - 871 = -867
-867 ÷ 871 = -0.9954075774971297
-0.9954075774971297 x 100 = -99.54%