-51.09% is the change from 873 to 427
Calculation steps:
[( 427 - 873 ) ÷ 873] x 100 = -51.09%
Formula
Percentage change = [(427 - 873) / 873] x 100
Subtract the new number by the original number
427 - 873 = -446
-446 ÷ 873 = -0.5108820160366552
-0.5108820160366552 x 100 = -51.09%