-42.32% is the change from 879 to 507
Calculation steps:
[( 507 - 879 ) ÷ 879] x 100 = -42.32%
Formula
Percentage change = [(507 - 879) / 879] x 100
Subtract the new number by the original number
507 - 879 = -372
-372 ÷ 879 = -0.4232081911262799
-0.4232081911262799 x 100 = -42.32%