What sodapop said...
While most of the early 747s were passenger models, for new build it became roughly 2 to 1 freighters about 15 years ago (and the -8/-8F has retained that ratio).
Furthermore, many of the passenger models have been converted to freighters - either BCF or 3rd party conversions - while many more of the 'early build' passenger versions have been parked or scrapped. As a result, the majority of 747s currently flying are freighters (and by a significant margin).