-1.09% is the change from 826 to 817
Calculation steps:
[( 817 - 826 ) ÷ 826] x 100 = -1.09%
Formula
Percentage change = [(817 - 826) / 826] x 100
Subtract the new number by the original number
817 - 826 = -9
-9 ÷ 826 = -0.010895883777239709
-0.010895883777239709 x 100 = -1.09%