-23.25% is the change from 873 to 670
Calculation steps:
[( 670 - 873 ) ÷ 873] x 100 = -23.25%
Formula
Percentage change = [(670 - 873) / 873] x 100
Subtract the new number by the original number
670 - 873 = -203
-203 ÷ 873 = -0.2325315005727377
-0.2325315005727377 x 100 = -23.25%