-3.39% is the change from 855 to 826
Calculation steps:
[( 826 - 855 ) ÷ 855] x 100 = -3.39%
Formula
Percentage change = [(826 - 855) / 855] x 100
Subtract the new number by the original number
826 - 855 = -29
-29 ÷ 855 = -0.03391812865497076
-0.03391812865497076 x 100 = -3.39%