-7.73% is the change from 828 to 764
Calculation steps:
[( 764 - 828 ) ÷ 828] x 100 = -7.73%
Formula
Percentage change = [(764 - 828) / 828] x 100
Subtract the new number by the original number
764 - 828 = -64
-64 ÷ 828 = -0.07729468599033816
-0.07729468599033816 x 100 = -7.73%