-9.3% is the change from 828 to 751
Calculation steps:
[( 751 - 828 ) ÷ 828] x 100 = -9.3%
Formula
Percentage change = [(751 - 828) / 828] x 100
Subtract the new number by the original number
751 - 828 = -77
-77 ÷ 828 = -0.0929951690821256
-0.0929951690821256 x 100 = -9.3%