-68.6% is the change from 879 to 276
Calculation steps:
[( 276 - 879 ) ÷ 879] x 100 = -68.6%
Formula
Percentage change = [(276 - 879) / 879] x 100
Subtract the new number by the original number
276 - 879 = -603
-603 ÷ 879 = -0.6860068259385665
-0.6860068259385665 x 100 = -68.6%