-50.52% is the change from 863 to 427
Calculation steps:
[( 427 - 863 ) ÷ 863] x 100 = -50.52%
Formula
Percentage change = [(427 - 863) / 863] x 100
Subtract the new number by the original number
427 - 863 = -436
-436 ÷ 863 = -0.5052143684820394
-0.5052143684820394 x 100 = -50.52%