I should add one more thing. It looks like you might have your blue dots in one column and your red dots in a different column. That would cause the "double labeling" to appear.
If that is the case, STACK those two columns so that all of the percentage values appear in a single column. This will also add another column that will identify which value it is, either red or blue. Use that red/blue column as a color for the points. That will also have the benefit of giving you the single label for a point rather than two labels.
Dan Obermiller