-97.4% is the change from 539 to 14
Calculation steps:
[( 14 - 539 ) ÷ 539] x 100 = -97.4%
Formula
Percentage change = [(14 - 539) / 539] x 100
Subtract the new number by the original number
14 - 539 = -525
-525 ÷ 539 = -0.974025974025974
-0.974025974025974 x 100 = -97.4%