Note that the 10% statistic means 10% of international freshman overall, not 10% of freshman who qualified for aid. It’s more common for international students not to qualify for financial aid since (and I’m speaking in general terms here) they’re more likely to have the available means to pay for college (hence the interest in looking at schools abroad and the ability to pay for international airfare, etc.) The 99.4% stat should still apply though, meaning that 99.4% (or so) of all international students should be having their financial needs met. If you qualify, then your need should be met (note that your “need” doesn’t mean the full tuition though, just what Hopkins deems you “need”).