Complex sentence: It debuted at No.66 on the "Billboard" 200 in its first week, selling nearly 9,000 copies, and stayed for three weeks, dropping to No.128 and then to No.181 before falling off the chart.
Split into simpler sentences: It debuted at No.66 on the Billboard 200 in its first week, selling nearly 9,000 copies. It stayed in the Billboard 200 for three weeks, dropping to No.128 and then to No.181 before falling off the chart.