-2.15% is the change from 279 to 273
Calculation steps:
[( 273 - 279 ) ÷ 279] x 100 = -2.15%
Formula
Percentage change = [(273 - 279) / 279] x 100
Subtract the new number by the original number
273 - 279 = -6
-6 ÷ 279 = -0.021505376344086023
-0.021505376344086023 x 100 = -2.15%