-55.21% is the change from 480 to 215
Calculation steps:
[( 215 - 480 ) ÷ 480] x 100 = -55.21%
Formula
Percentage change = [(215 - 480) / 480] x 100
Subtract the new number by the original number
215 - 480 = -265
-265 ÷ 480 = -0.5520833333333334
-0.5520833333333334 x 100 = -55.21%