-91.09% is the change from 539 to 48
Calculation steps:
[( 48 - 539 ) ÷ 539] x 100 = -91.09%
Formula
Percentage change = [(48 - 539) / 539] x 100
Subtract the new number by the original number
48 - 539 = -491
-491 ÷ 539 = -0.9109461966604824
-0.9109461966604824 x 100 = -91.09%