-96.79% is the change from 873 to 28
Calculation steps:
[( 28 - 873 ) ÷ 873] x 100 = -96.79%
Formula
Percentage change = [(28 - 873) / 873] x 100
Subtract the new number by the original number
28 - 873 = -845
-845 ÷ 873 = -0.9679266895761741
-0.9679266895761741 x 100 = -96.79%