-97.55% is the change from 489 to 12
Calculation steps:
[( 12 - 489 ) ÷ 489] x 100 = -97.55%
Formula
Percentage change = [(12 - 489) / 489] x 100
Subtract the new number by the original number
12 - 489 = -477
-477 ÷ 489 = -0.9754601226993865
-0.9754601226993865 x 100 = -97.55%