-7.17% is the change from 279 to 259
Calculation steps:
[( 259 - 279 ) ÷ 279] x 100 = -7.17%
Formula
Percentage change = [(259 - 279) / 279] x 100
Subtract the new number by the original number
259 - 279 = -20
-20 ÷ 279 = -0.07168458781362007
-0.07168458781362007 x 100 = -7.17%