-96.29% is the change from 539 to 20
Calculation steps:
[( 20 - 539 ) ÷ 539] x 100 = -96.29%
Formula
Percentage change = [(20 - 539) / 539] x 100
Subtract the new number by the original number
20 - 539 = -519
-519 ÷ 539 = -0.9628942486085343
-0.9628942486085343 x 100 = -96.29%