-97.96% is the change from 489 to 10
Calculation steps:
[( 10 - 489 ) ÷ 489] x 100 = -97.96%
Formula
Percentage change = [(10 - 489) / 489] x 100
Subtract the new number by the original number
10 - 489 = -479
-479 ÷ 489 = -0.9795501022494888
-0.9795501022494888 x 100 = -97.96%