-69.74% is the change from 879 to 266
Calculation steps:
[( 266 - 879 ) ÷ 879] x 100 = -69.74%
Formula
Percentage change = [(266 - 879) / 879] x 100
Subtract the new number by the original number
266 - 879 = -613
-613 ÷ 879 = -0.6973833902161547
-0.6973833902161547 x 100 = -69.74%