-6.64% is the change from 828 to 773
Calculation steps:
[( 773 - 828 ) ÷ 828] x 100 = -6.64%
Formula
Percentage change = [(773 - 828) / 828] x 100
Subtract the new number by the original number
773 - 828 = -55
-55 ÷ 828 = -0.06642512077294686
-0.06642512077294686 x 100 = -6.64%