-2.6% is the change from 539 to 525
Calculation steps:
[( 525 - 539 ) ÷ 539] x 100 = -2.6%
Formula
Percentage change = [(525 - 539) / 539] x 100
Subtract the new number by the original number
525 - 539 = -14
-14 ÷ 539 = -0.025974025974025976
-0.025974025974025976 x 100 = -2.6%