Those percentages are a little different from the percentages given (along with much other detail) by Yale's Office of Institutional Research: https://oir.yale.edu/sites/default/files/w004_enroll_racegen....

The percentages at the link above are labeled as "University-wide Enrollments," which seems to mean that they account for graduate students as well as undergraduates. But the DOJ finding is only about undergraduate admissions.