-36.46% is the change from 480 to 305
Calculation steps:
[( 305 - 480 ) ÷ 480] x 100 = -36.46%
Formula
Percentage change = [(305 - 480) / 480] x 100
Subtract the new number by the original number
305 - 480 = -175
-175 ÷ 480 = -0.3645833333333333
-0.3645833333333333 x 100 = -36.46%