Global contemporary art sales slowed by a quarter in the year to July 2016 as demand in China dried up, according to leading index Artprice.
Turnover was $1.5 billion (1.3 billion euros) compared with $2.1 billion in the previous year.
"The market saw a healthy period of adjustment, which was as necessary as it was predictable," Artprice founder and chief executive Thierry Ehrmann said in the report released on Sunday.
Despite the correction, contemporary art "remains a particularly high-performing long-term investment", Artprice said.
It said the sector has experienced growth of 1,370 percent since 2000 and has produced an annual return of nearly five percent in the same period in a market in which the number of artworks has quadrupled.
The return rose to nine percent for works with a purchase price exceeding $20,000 dollars.
But Chinese collectors, who have driven the contemporary art scene in recent years, turned their back on modern art and bought classic works.
Chinese buyers snapped up Monets worth $214 million, a single Van Gogh work, "L'Allee des Alyscamps", that sold for $66 million and Modigliani works worth $170 million.
As a result of the change in Chinese buyers' priorities, China slipped to third in the global contemporary art market behind the United States and Britain -- or more precisely New York and London, which account for the overwhelming majority of the sales.
Sales in the US and Britain accounted for 65 percent of the global sales.
The United States sold $582 million worth of contemporary art in one year. Although that represented a 24-percent drop year-on-year, it still represented 38 percent of the market.
Sales in Britain were also down, but only by 10 percent, to $399 million.
An untitled Jean-Michel Basquiat painting sold for $57.2 million at Christie's in New York in May, setting a new record for the late artist.
Two other stars of the contemporary market, the Americans Jeff Koons and Christopher Wool, still sold more than $10 million of art each.