-1.17% is the change from 515 to 509
Calculation steps:
[( 509 - 515 ) ÷ 515] x 100 = -1.17%
Formula
Percentage change = [(509 - 515) / 515] x 100
Subtract the new number by the original number
509 - 515 = -6
-6 ÷ 515 = -0.011650485436893204
-0.011650485436893204 x 100 = -1.17%