Mary's Dairies is battling for leadership in the Foodie segment of its local market. Foodies account for only $10\%$ of all potential customers, but they are highly influential. Mary's Dairies believes it sold $$12\mathrm{.}3$ million in cheese to Foodies customers last period. Overall, Mary's Dairies had $$116\mathrm{.}8$ million in total sales, in a regional market with $77$ million potential customers. Calculate Mary's Dairies Brand Development Index for the Foodie segment. Report your answer as a percent. Round to the nearest tenth of a percent. Report $25\mathrm{.}5\%,$ for example, as $"25\mathrm{.}5".$