-42.66% is the change from 879 to 504
Calculation steps:
[( 504 - 879 ) ÷ 879] x 100 = -42.66%
Formula
Percentage change = [(504 - 879) / 879] x 100
Subtract the new number by the original number
504 - 879 = -375
-375 ÷ 879 = -0.42662116040955633
-0.42662116040955633 x 100 = -42.66%