I dunno, Rongie - most perople think that when something is not right it is wrong. I guess your value system doesn't function that way, though.
There is nothing wrong or misleading or incorrect about rounding 29.870129 to 30. There is nothing that says you must round to two decimal places, especially since the 23% number does not contain more figures. Now if I were making a calculation where I wanted 4 or 5 significant figures, I would take it out to six places or so. But for discussion purposes, 30% is perfectly correct and an honest representation.