-4.83% is the change from 828 to 788
Calculation steps:
[( 788 - 828 ) ÷ 828] x 100 = -4.83%
Formula
Percentage change = [(788 - 828) / 828] x 100
Subtract the new number by the original number
788 - 828 = -40
-40 ÷ 828 = -0.04830917874396135
-0.04830917874396135 x 100 = -4.83%