-71.56% is the change from 879 to 250
Calculation steps:
[( 250 - 879 ) ÷ 879] x 100 = -71.56%
Formula
Percentage change = [(250 - 879) / 879] x 100
Subtract the new number by the original number
250 - 879 = -629
-629 ÷ 879 = -0.7155858930602957
-0.7155858930602957 x 100 = -71.56%