-31.04% is the change from 728 to 502
Calculation steps:
[( 502 - 728 ) ÷ 728] x 100 = -31.04%
Formula
Percentage change = [(502 - 728) / 728] x 100
Subtract the new number by the original number
502 - 728 = -226
-226 ÷ 728 = -0.31043956043956045
-0.31043956043956045 x 100 = -31.04%