Please show work if possible, thank you!

The beta for Nettix's stock is 13 , the current risk-tree rate (r) is 19%, the expected return on the market porttolio (E(rm)) is 6%. If the expected return on the market portfolio decreases by 0.15%, by how much will the expected retum on Netfix'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