-68.26% is the change from 879 to 279
Calculation steps:
[( 279 - 879 ) ÷ 879] x 100 = -68.26%
Formula
Percentage change = [(279 - 879) / 879] x 100
Subtract the new number by the original number
279 - 879 = -600
-600 ÷ 879 = -0.6825938566552902
-0.6825938566552902 x 100 = -68.26%