-15.41% is the change from 519 to 439
Calculation steps:
[( 439 - 519 ) ÷ 519] x 100 = -15.41%
Formula
Percentage change = [(439 - 519) / 519] x 100
Subtract the new number by the original number
439 - 519 = -80
-80 ÷ 519 = -0.15414258188824662
-0.15414258188824662 x 100 = -15.41%