The beta for Walmart's stock is 1.3, the current risk-free rate is 2.9%, the expected return on the market porftolio is 6.5%. If the expected return on the market portfolio decreases by 0.1%, 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.