2008 AMC 8 Problem 9

In 2005 Tycoon Tammy invested 100 dollars for two years. During the first year her investment suffered a 15\% loss, but during the second year the remaining investment showed a 20\% gain. Over the two-year period, what was the change in Tammy's investment?

\textbf{(A)}\ 5\%\text{ loss}\qquad \textbf{(B)}\ 2\%\text{ loss}\qquad \textbf{(C)}\ 1\%\text{ gain}\qquad \textbf{(D)}\ 2\% \text{ gain} \qquad \textbf{(E)}\ 5\%\text{ gain} \qquad

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.