You've collected the following information from your favorite financial website.

According to your research, the growth rate in dividends for Manta Energy for the previous $10$ years has been negative $10$ percent. If investors feel this growth rate will continue, what is the required return for the stock?

Note: A negative answer should be indicated by a minus sign. Do not round intermediate colculotions and enter your answer as o percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$

$\begin{array}{cc}\text{R}\text{e}\text{q}\text{u}\text{i}\text{r}\text{e}\text{d}\text{r}\text{e}\text{t}\text{u}\text{r}\text{n}& \text{I}\end{array}$