The annual sales volume of the stores, net of sales expected to be retained in nearby stores and online, is expected to be about $300 million, the company said in a statement. The company, which operates 770 Macy’s stores, said the store closures would be early next year and that it would announce the locations of the affected stores on a later date. Globally, Macy’s operates a total of 885 stores, including Macy’s, Bloomingdale’s and others.