-85.69% is the change from 489 to 70
Calculation steps:
[( 70 - 489 ) ÷ 489] x 100 = -85.69%
Formula
Percentage change = [(70 - 489) / 489] x 100
Subtract the new number by the original number
70 - 489 = -419
-419 ÷ 489 = -0.8568507157464212
-0.8568507157464212 x 100 = -85.69%