-2.89% is the change from 519 to 504
Calculation steps:
[( 504 - 519 ) ÷ 519] x 100 = -2.89%
Formula
Percentage change = [(504 - 519) / 519] x 100
Subtract the new number by the original number
504 - 519 = -15
-15 ÷ 519 = -0.028901734104046242
-0.028901734104046242 x 100 = -2.89%