(Latest Date Information - Information entered 14 days ago)/Information Entered 14 days ago
If we do have any data for that date ( "Information entered 14 days ago"), then we need to keep moving a day forward(13th day, 12th day etc) and consider the first available information .
If we do NOT have any data for that date ( "Information entered 14 days ago"), then we need to keep moving a day forward(13th day, 12th day etc) and consider the first available information .