Complex sentence: The album debuted on the US "Billboard" 200 at number three with 96,000 units sold in its first week, less than half of both "Musicology" and "3121".
Split into simpler sentences: The album debuted on the US "Billboard" 200 at number three with 96,000 units sold in its first week. This is less than half of both "Musicology" and "3121".