I'd like to be able to extract the number of MQL's that converted to a Customer (or any other lifecycle stage) in a particular time frame. I can't see any API's that facilitate this. Any ideas on how to achieve this? There are 2 API's that give me the number of MQL's and Customers separately but I'm after logic that requires a contact was an MQL and then went on to become a customer.
i.e. Out of 4200 MQL's, 527 of them went on to become a customer at a conversion rate of 12% in the month of October