<p>You left out math (2%) which brings it up to 20%. They probably included neuroscience which would bring it up more. The common data set percent is based on majors rather than headcount, so double-majors are counted funny. It’s possible that 30% of students majored in a science (with some also double-majoring in something else) but that only 20+% of all majors were science. I didn’t see any numbers anywhere to be able to compute this.</p>