-0.38% is the change from 531 to 529
Calculation steps:
[( 529 - 531 ) ÷ 531] x 100 = -0.38%
Formula
Percentage change = [(529 - 531) / 531] x 100
Subtract the new number by the original number
529 - 531 = -2
-2 ÷ 531 = -0.003766478342749529
-0.003766478342749529 x 100 = -0.38%