-1.67% is the change from 539 to 530
Calculation steps:
[( 530 - 539 ) ÷ 539] x 100 = -1.67%
Formula
Percentage change = [(530 - 539) / 539] x 100
Subtract the new number by the original number
530 - 539 = -9
-9 ÷ 539 = -0.016697588126159554
-0.016697588126159554 x 100 = -1.67%