User:M1ss1ontomars2k4/sandbox3

$$ \begin{align} % \mbox{ difference} & = {|{x_i- \bar x}|  \over \bar x}  \times 100% \\ & = {|{0.09766-0.0987}| \over 0.0987 } \times 100% \\ & = 1.1 % \\ \end{align} $$