There is a $23\%$ chance of an economic boom and a $12\%$ chance of a recession in the next year. Otherwise, the economy is expected to stay normal. You forecast that McDonald's stock will go up $23\mathrm{.}4\%$ if the economy is booming, $6\mathrm{.}6\%$ if the economy is normal, and go down $11\mathrm{.}0$ if there is a recession. What is McDonald's expected return under these scenarios? Answer in percent, rounded to one decimal place.