-3.09% is the change from 907 to 879
Calculation steps:
[( 879 - 907 ) ÷ 907] x 100 = -3.09%
Formula
Percentage change = [(879 - 907) / 907] x 100
Subtract the new number by the original number
879 - 907 = -28
-28 ÷ 907 = -0.030871003307607496
-0.030871003307607496 x 100 = -3.09%