-29.67% is the change from 728 to 512
Calculation steps:
[( 512 - 728 ) ÷ 728] x 100 = -29.67%
Formula
Percentage change = [(512 - 728) / 728] x 100
Subtract the new number by the original number
512 - 728 = -216
-216 ÷ 728 = -0.2967032967032967
-0.2967032967032967 x 100 = -29.67%