Complex sentence: Although it initially sold quickly, selling 298,973 copies in the US in its first week, and debuting at number 1 on the Bilboard 200, the album's appeal quickly wore off, and it soon slid down the charts.
Split into simpler sentences: Although it initially sold quickly, selling 298,973 copies in the US in its first week, and debuting at number 1 on the Bilboard 200. The album's appeal quickly wore-off, and soon slid down the charts.