-66.98% is the change from 845 to 279
Calculation steps:
[( 279 - 845 ) ÷ 845] x 100 = -66.98%
Formula
Percentage change = [(279 - 845) / 845] x 100
Subtract the new number by the original number
279 - 845 = -566
-566 ÷ 845 = -0.6698224852071006
-0.6698224852071006 x 100 = -66.98%