-50.63% is the change from 867 to 428
Calculation steps:
[( 428 - 867 ) ÷ 867] x 100 = -50.63%
Formula
Percentage change = [(428 - 867) / 867] x 100
Subtract the new number by the original number
428 - 867 = -439
-439 ÷ 867 = -0.5063437139561707
-0.5063437139561707 x 100 = -50.63%