-64.73% is the change from 879 to 310
Calculation steps:
[( 310 - 879 ) ÷ 879] x 100 = -64.73%
Formula
Percentage change = [(310 - 879) / 879] x 100
Subtract the new number by the original number
310 - 879 = -569
-569 ÷ 879 = -0.6473265073947668
-0.6473265073947668 x 100 = -64.73%