-50.98% is the change from 863 to 423
Calculation steps:
[( 423 - 863 ) ÷ 863] x 100 = -50.98%
Formula
Percentage change = [(423 - 863) / 863] x 100
Subtract the new number by the original number
423 - 863 = -440
-440 ÷ 863 = -0.5098493626882966
-0.5098493626882966 x 100 = -50.98%