-16.55% is the change from 828 to 691
Calculation steps:
[( 691 - 828 ) ÷ 828] x 100 = -16.55%
Formula
Percentage change = [(691 - 828) / 828] x 100
Subtract the new number by the original number
691 - 828 = -137
-137 ÷ 828 = -0.16545893719806765
-0.16545893719806765 x 100 = -16.55%