-12.08% is the change from 828 to 728
Calculation steps:
[( 728 - 828 ) ÷ 828] x 100 = -12.08%
Formula
Percentage change = [(728 - 828) / 828] x 100
Subtract the new number by the original number
728 - 828 = -100
-100 ÷ 828 = -0.12077294685990338
-0.12077294685990338 x 100 = -12.08%