-8.35% is the change from 479 to 439
Calculation steps:
[( 439 - 479 ) ÷ 479] x 100 = -8.35%
Formula
Percentage change = [(439 - 479) / 479] x 100
Subtract the new number by the original number
439 - 479 = -40
-40 ÷ 479 = -0.08350730688935282
-0.08350730688935282 x 100 = -8.35%