"Madonna, Rebel Heart - No. 21: Madonna’s Rebel Heart slips from No. 2 to No. 21 with 26,000 units (down 78 percent) in its second week. It fell by 80 percent in album sales, to 24,000 (down from 116,000). The 80 percent erosion is steep, but not terribly out-of-the-ordinary for a title that likely had a lot of pre-order sales that made it difficult to sustain a strong second week. High-debuting albums from big-named stars regularly see second-week declines of more than 75 percent in sales. For example, in the tracking week ending March 8, Big Sean’s Dark Sky Paradise, Kid Rock’s First Kiss and Chris Brown & Tyga’s Fan of a Fan all dropped by 75 or more in their second frame. In the past year, albums that fell sharper than Rebel Heart include: Fall Out Boy’s American Beauty/American Psycho (82 percent), Foo Fighters’ Sonic Highways (81 percent) and 5 Seconds of Summer’s She Looks So Perfect EP (82 percent)."