-0.19% is the change from 539 to 538
Calculation steps:
[( 538 - 539 ) ÷ 539] x 100 = -0.19%
Formula
Percentage change = [(538 - 539) / 539] x 100
Subtract the new number by the original number
538 - 539 = -1
-1 ÷ 539 = -0.0018552875695732839
-0.0018552875695732839 x 100 = -0.19%