Complex sentence: When examined by a Guinness World Record official in May 2000, Davidson had 462 piercings with 192 in her face alone; by August 2001 when she was re-examined she was found to have 720 piercings.
Split into simpler sentences: When examined by a Guinness World Record official in May 2000, Davidson had 462 piercings, with 192 in her face alone. By August 2001 when she was re-examined she was found to have 720 piercings.