Fourteen months after the Supreme Court struck down affirmative action at the University of North Carolina at Chapel Hill, the university on Thursday reported sharp declines in enrollment of new Black and Hispanic students compared with a year ago.

Last fall, Black students accounted for 10.5 percent of new enrollees at U.N.C., and Hispanic students represented 10.8 percent of the incoming class.

But new figures from Chapel Hill show that the number of Black first-year and transfer students dropped more than 25 percent for this academic year. The number of new Hispanic students declined about 7 percent.

“It’s too soon to see trends with just one year of data,” Rachelle Feldman, U.N.C.’s vice provost for enrollment, said in a statement. “We are committed to following the new law.”

Black students who enrolled this semester now make up 7.8 percent of the 5,624 new students. Hispanic students account for 10.1 percent of the class. Students who identified as Asian or Asian American made up nearly 26 percent of this year’s entering class, up a percentage point from last year.

The Supreme Court’s decision to curb considerably the use of race in admissions last summer shook higher education, forcing admissions offices from coast to coast to rethink their procedures. But the cases before the justices focused on only two schools, one private and one public, both with extraordinary pedigrees: Harvard, the country’s oldest university, and North Carolina, which, in 1798, became the first public university in the United States to confer degrees.