-70.53% is the change from 879 to 259
Calculation steps:
[( 259 - 879 ) ÷ 879] x 100 = -70.53%
Formula
Percentage change = [(259 - 879) / 879] x 100
Subtract the new number by the original number
259 - 879 = -620
-620 ÷ 879 = -0.7053469852104665
-0.7053469852104665 x 100 = -70.53%