-1.54% is the change from 519 to 511
Calculation steps:
[( 511 - 519 ) ÷ 519] x 100 = -1.54%
Formula
Percentage change = [(511 - 519) / 519] x 100
Subtract the new number by the original number
511 - 519 = -8
-8 ÷ 519 = -0.015414258188824663
-0.015414258188824663 x 100 = -1.54%