-37.5% is the change from 728 to 455
Calculation steps:
[( 455 - 728 ) ÷ 728] x 100 = -37.5%
Formula
Percentage change = [(455 - 728) / 728] x 100
Subtract the new number by the original number
455 - 728 = -273
-273 ÷ 728 = -0.375
-0.375 x 100 = -37.5%