-85.07% is the change from 489 to 73
Calculation steps:
[( 73 - 489 ) ÷ 489] x 100 = -85.07%
Formula
Percentage change = [(73 - 489) / 489] x 100
Subtract the new number by the original number
73 - 489 = -416
-416 ÷ 489 = -0.8507157464212679
-0.8507157464212679 x 100 = -85.07%