-2.05% is the change from 828 to 811
Calculation steps:
[( 811 - 828 ) ÷ 828] x 100 = -2.05%
Formula
Percentage change = [(811 - 828) / 828] x 100
Subtract the new number by the original number
811 - 828 = -17
-17 ÷ 828 = -0.020531400966183576
-0.020531400966183576 x 100 = -2.05%