-33.9% is the change from 879 to 581
Calculation steps:
[( 581 - 879 ) ÷ 879] x 100 = -33.9%
Formula
Percentage change = [(581 - 879) / 879] x 100
Subtract the new number by the original number
581 - 879 = -298
-298 ÷ 879 = -0.3390216154721274
-0.3390216154721274 x 100 = -33.9%