-88.71% is the change from 487 to 55
Calculation steps:
[( 55 - 487 ) ÷ 487] x 100 = -88.71%
Formula
Percentage change = [(55 - 487) / 487] x 100
Subtract the new number by the original number
55 - 487 = -432
-432 ÷ 487 = -0.8870636550308009
-0.8870636550308009 x 100 = -88.71%