-9.46% is the change from 539 to 488
Calculation steps:
[( 488 - 539 ) ÷ 539] x 100 = -9.46%
Formula
Percentage change = [(488 - 539) / 539] x 100
Subtract the new number by the original number
488 - 539 = -51
-51 ÷ 539 = -0.09461966604823747
-0.09461966604823747 x 100 = -9.46%