Mustard of the Month Club has 20,000 members who each get a monthly delivery of gourmet mustard. Of the total membership, on average, 4,030 customers are on long-turm contracts, while the rest pay month-to-month for their deliveries. In the last year, the company reports that 11,995 month-to-month customers continued to take deliveries, while the rest stopped. Calculate retention rate for Mustard of the Month Club. Report as a percent. Report 25.5%, for example, as "25.5". Rounding: tenth of a percent.