Complex sentence: In 1994 after CBS lost broadcasting rights of the NFL to Fox, WJKA dropped CBS in favor of Fox, changing its call letters to the current WSFX-TV (for Super Fox).
Split into simpler sentences: In 1994 after CBS lost broadcasting rights of the NFL to Fox, WJKA dropped CBS in favor of that network. The channel also changing its call letters to the current WSFX-TV (for Super Fox).