Complex sentence: Rufforth used to be known for it's farming talents, with over 7 farms during the 1970's, however, due to agricultural decline across the world, there is now only one left, run by the Hildreth family.
Split into simpler sentences: Rufforth used to be known for its farming talents, with over 7 farms during the 1970s. However, due to agricultural decline there is now only one left, run by the Hildreth family.