Complex sentence: "What Makes You Beautiful" was the 20th best-selling single of 2011, moving 540,000 copies, and was the 92nd best-selling single of the 21st century in the UK by May 2012.
Split into simpler sentences: What Makes You Beautiful was the 20th best-selling single of 2011, moving 540,000 copies. The single was the 92nd best-selling single of the 21st century in the UK by May 2012.