-84.05% is the change from 489 to 78
Calculation steps:
[( 78 - 489 ) ÷ 489] x 100 = -84.05%
Formula
Percentage change = [(78 - 489) / 489] x 100
Subtract the new number by the original number
78 - 489 = -411
-411 ÷ 489 = -0.8404907975460123
-0.8404907975460123 x 100 = -84.05%