-13.51% is the change from 555 to 480
Calculation steps:
[( 480 - 555 ) ÷ 555] x 100 = -13.51%
Formula
Percentage change = [(480 - 555) / 555] x 100
Subtract the new number by the original number
480 - 555 = -75
-75 ÷ 555 = -0.13513513513513514
-0.13513513513513514 x 100 = -13.51%