-26.58% is the change from 873 to 641
Calculation steps:
[( 641 - 873 ) ÷ 873] x 100 = -26.58%
Formula
Percentage change = [(641 - 873) / 873] x 100
Subtract the new number by the original number
641 - 873 = -232
-232 ÷ 873 = -0.26575028636884307
-0.26575028636884307 x 100 = -26.58%