Corporate Fund started the year with a net asset value of $$30\mathrm{.}80.$ By year$-$end, its NAV equaled $$30\mathrm{.}30.$ The fund paid year$-$end distributions of income and capital gains of $$1\mathrm{.}40.$

What was the $($pretax$)$ rate of return to an investor in the fund? $($Round your answer to $2$ decimal places.$)$

Rate of return