(CNN) -- Dunkin' is permanently closing about 800 locations in the U.S., eight percent of its restaurants in the country.
The company detailed the changes in its quarterly earnings report Thursday. It described the closures as "real estate portfolio rationalizations."
Dunkin' said the locations have low sales volume and represent only two percent of its U.S. sales last year.
More than half of the closures are in Speedway convenience stores, a change Dunkin' previously announced in February.
The company also said it may permanently close about 350 locations outside of the U.S.