-97.59% is the change from 539 to 13
Calculation steps:
[( 13 - 539 ) ÷ 539] x 100 = -97.59%
Formula
Percentage change = [(13 - 539) / 539] x 100
Subtract the new number by the original number
13 - 539 = -526
-526 ÷ 539 = -0.9758812615955473
-0.9758812615955473 x 100 = -97.59%