-49.19% is the change from 864 to 439
Calculation steps:
[( 439 - 864 ) ÷ 864] x 100 = -49.19%
Formula
Percentage change = [(439 - 864) / 864] x 100
Subtract the new number by the original number
439 - 864 = -425
-425 ÷ 864 = -0.49189814814814814
-0.49189814814814814 x 100 = -49.19%