-86.46% is the change from 539 to 73
Calculation steps:
[( 73 - 539 ) ÷ 539] x 100 = -86.46%
Formula
Percentage change = [(73 - 539) / 539] x 100
Subtract the new number by the original number
73 - 539 = -466
-466 ÷ 539 = -0.8645640074211502
-0.8645640074211502 x 100 = -86.46%