-75.54% is the change from 879 to 215
Calculation steps:
[( 215 - 879 ) ÷ 879] x 100 = -75.54%
Formula
Percentage change = [(215 - 879) / 879] x 100
Subtract the new number by the original number
215 - 879 = -664
-664 ÷ 879 = -0.7554038680318543
-0.7554038680318543 x 100 = -75.54%