-37.5% is the change from 480 to 300
Calculation steps:
[( 300 - 480 ) ÷ 480] x 100 = -37.5%
Formula
Percentage change = [(300 - 480) / 480] x 100
Subtract the new number by the original number
300 - 480 = -180
-180 ÷ 480 = -0.375
-0.375 x 100 = -37.5%