-37.5% is the change from 768 to 480
Calculation steps:
[( 480 - 768 ) ÷ 768] x 100 = -37.5%
Formula
Percentage change = [(480 - 768) / 768] x 100
Subtract the new number by the original number
480 - 768 = -288
-288 ÷ 768 = -0.375
-0.375 x 100 = -37.5%