-55.49% is the change from 728 to 324
Calculation steps:
[( 324 - 728 ) ÷ 728] x 100 = -55.49%
Formula
Percentage change = [(324 - 728) / 728] x 100
Subtract the new number by the original number
324 - 728 = -404
-404 ÷ 728 = -0.554945054945055
-0.554945054945055 x 100 = -55.49%