-93.05% is the change from 489 to 34
Calculation steps:
[( 34 - 489 ) ÷ 489] x 100 = -93.05%
Formula
Percentage change = [(34 - 489) / 489] x 100
Subtract the new number by the original number
34 - 489 = -455
-455 ÷ 489 = -0.9304703476482618
-0.9304703476482618 x 100 = -93.05%