Is all of the text entered in the same text block or are they separated out?
If it is all in the same text block, the you could open up the Tabs and add a right justified tab stop for your percentages to line up. This can be found under Window menu, Type, then Tabs. You'll need to highlight the text first before applying the right justified tab stop. Then, highlight the blank text space between the left text and percentages and hit the tab key. Do this for each line.