-0.39% is the change from 514 to 512
Calculation steps:
[( 512 - 514 ) ÷ 514] x 100 = -0.39%
Formula
Percentage change = [(512 - 514) / 514] x 100
Subtract the new number by the original number
512 - 514 = -2
-2 ÷ 514 = -0.0038910505836575876
-0.0038910505836575876 x 100 = -0.39%