-43.75% is the change from 480 to 270
Calculation steps:
[( 270 - 480 ) ÷ 480] x 100 = -43.75%
Formula
Percentage change = [(270 - 480) / 480] x 100
Subtract the new number by the original number
270 - 480 = -210
-210 ÷ 480 = -0.4375
-0.4375 x 100 = -43.75%