-51.21% is the change from 867 to 423
Calculation steps:
[( 423 - 867 ) ÷ 867] x 100 = -51.21%
Formula
Percentage change = [(423 - 867) / 867] x 100
Subtract the new number by the original number
423 - 867 = -444
-444 ÷ 867 = -0.5121107266435986
-0.5121107266435986 x 100 = -51.21%