-30.93% is the change from 873 to 603
Calculation steps:
[( 603 - 873 ) ÷ 873] x 100 = -30.93%
Formula
Percentage change = [(603 - 873) / 873] x 100
Subtract the new number by the original number
603 - 873 = -270
-270 ÷ 873 = -0.30927835051546393
-0.30927835051546393 x 100 = -30.93%