-15.61% is the change from 519 to 438
Calculation steps:
[( 438 - 519 ) ÷ 519] x 100 = -15.61%
Formula
Percentage change = [(438 - 519) / 519] x 100
Subtract the new number by the original number
438 - 519 = -81
-81 ÷ 519 = -0.15606936416184972
-0.15606936416184972 x 100 = -15.61%