-51.55% is the change from 873 to 423
Calculation steps:
[( 423 - 873 ) ÷ 873] x 100 = -51.55%
Formula
Percentage change = [(423 - 873) / 873] x 100
Subtract the new number by the original number
423 - 873 = -450
-450 ÷ 873 = -0.5154639175257731
-0.5154639175257731 x 100 = -51.55%