-34.2% is the change from 424 to 279
Calculation steps:
[( 279 - 424 ) ÷ 424] x 100 = -34.2%
Formula
Percentage change = [(279 - 424) / 424] x 100
Subtract the new number by the original number
279 - 424 = -145
-145 ÷ 424 = -0.3419811320754717
-0.3419811320754717 x 100 = -34.2%