The beta for Walmart's stock is $0\mathrm{.}84,$ the current risk$-$free rate left parenthesis r subscript f right parenthesis is $1\mathrm{.}8\%$ and the current expected return on the market portfolio left parenthesis E left parenthesis r subscript m right parenthesis right parenthesis is $7\mathrm{.}4\%.$ If the expected return on the market portfolio increases by $0\mathrm{.}40\%,$ by how much will the expected return on Walmart's stock change? Express your result in percent and round to two decimals $($do not include the $\%-$symbol in your answer$).$ Enter increases as positive numbers, decreases as negative numbers.