-0.12% is the change from 827 to 826
Calculation steps:
[( 826 - 827 ) ÷ 827] x 100 = -0.12%
Formula
Percentage change = [(826 - 827) / 827] x 100
Subtract the new number by the original number
826 - 827 = -1
-1 ÷ 827 = -0.0012091898428053204
-0.0012091898428053204 x 100 = -0.12%