Developer Harry Macklowe art collection sells for $921 million, including Mark Rothko, Jackson Pollock and Andy Warhol pieces

A Mark Rothko painting has sold for US$82.5 million ($112.4 million) at auction, the second-highest price for a work by the late abstract artist, as part of a $921 million collection belonging to US real estate mogul Harry Macklowe.

It was the first time the piece titled No. 7 —…