-39.78% is the change from 279 to 168
Calculation steps:
[( 168 - 279 ) ÷ 279] x 100 = -39.78%
Formula
Percentage change = [(168 - 279) / 279] x 100
Subtract the new number by the original number
168 - 279 = -111
-111 ÷ 279 = -0.3978494623655914
-0.3978494623655914 x 100 = -39.78%