-88.54% is the change from 480 to 55
Calculation steps:
[( 55 - 480 ) ÷ 480] x 100 = -88.54%
Formula
Percentage change = [(55 - 480) / 480] x 100
Subtract the new number by the original number
55 - 480 = -425
-425 ÷ 480 = -0.8854166666666666
-0.8854166666666666 x 100 = -88.54%