-99.39% is the change from 489 to 3
Calculation steps:
[( 3 - 489 ) ÷ 489] x 100 = -99.39%
Formula
Percentage change = [(3 - 489) / 489] x 100
Subtract the new number by the original number
3 - 489 = -486
-486 ÷ 489 = -0.9938650306748467
-0.9938650306748467 x 100 = -99.39%