An index model regression applied to past monthly returns in Ford's stock price produces the following estimates, which are believed to be stable over time:

$r_F=0\mathrm{.}10\%+1\mathrm{.}1r_M$

Required:

If the market index subsequently rises by $9\mathrm{.}1\%$ and Ford's stock price rises by $9\%,$ what is the abnormal change in Ford's stock price?

Note: Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to $2$ decimal places.

Abnormal return $\%$