-64.51% is the change from 879 to 312
Calculation steps:
[( 312 - 879 ) ÷ 879] x 100 = -64.51%
Formula
Percentage change = [(312 - 879) / 879] x 100
Subtract the new number by the original number
312 - 879 = -567
-567 ÷ 879 = -0.6450511945392492
-0.6450511945392492 x 100 = -64.51%