-1.21% is the change from 826 to 816
Calculation steps:
[( 816 - 826 ) ÷ 826] x 100 = -1.21%
Formula
Percentage change = [(816 - 826) / 826] x 100
Subtract the new number by the original number
816 - 826 = -10
-10 ÷ 826 = -0.012106537530266344
-0.012106537530266344 x 100 = -1.21%