-85.48% is the change from 489 to 71
Calculation steps:
[( 71 - 489 ) ÷ 489] x 100 = -85.48%
Formula
Percentage change = [(71 - 489) / 489] x 100
Subtract the new number by the original number
71 - 489 = -418
-418 ÷ 489 = -0.8548057259713702
-0.8548057259713702 x 100 = -85.48%