Pick a large company with same store sales.

So-called “same-store sales” are a very important measure for companies as diverse as McDonald’s and Sears. As the name suggests, examining same store sales means comparing revenue from the same stores or restaurants at two different points in time.
Pick a large company with same store sales.
Discuss your findings about same store sales for this company.
In relation to your findings, elaborate on why you think companies focus on same store sales vs total sales?