-36.31% is the change from 873 to 556
Calculation steps:
[( 556 - 873 ) ÷ 873] x 100 = -36.31%
Formula
Percentage change = [(556 - 873) / 873] x 100
Subtract the new number by the original number
556 - 873 = -317
-317 ÷ 873 = -0.3631156930126002
-0.3631156930126002 x 100 = -36.31%