The beta for Walmart's stock is 0.52, the current risk-free rate left parenthesis r subscript f right parenthesis is 1.8% and the current expected return on the market portfolio left parenthesis E left parenthesis r subscript m right parenthesis right parenthesis is 7.4%. If the expected return on the market portfolio increases by 0.52%, 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