-0.19% is the change from 531 to 530
Calculation steps:
[( 530 - 531 ) ÷ 531] x 100 = -0.19%
Formula
Percentage change = [(530 - 531) / 531] x 100
Subtract the new number by the original number
530 - 531 = -1
-1 ÷ 531 = -0.0018832391713747645
-0.0018832391713747645 x 100 = -0.19%