March 22 (Reuters) - Canada's main stock index ended sharply lower on Thursday, registering its biggest one-day percentage drop since September 2016, as worries over the threat of trade wars between the United States and China rattled investors.
U.S. President Donald Trump signed a presidential memorandum that could impose tariffs on up to $60 billion of imports from China. Trump will target the Chinese imports only after a consultation period.
U.S. stocks dropped as well, with each of the three major Wall Street indexes suffering its biggest daily percentage drop in six weeks.
* The Toronto Stock Exchange's S&P/TSX composite index <.GSPTSE > fell 275.35 points, or 1.76 percent, to 15,399.93.
* The TSX energy index was down 2.4 percent and among sectors with the biggest declines on the day following a decline in oil prices.
* The TSX posted three new 52-week highs and nine new lows. Across all Canadian issues there were 11 new 52-week highs and 40 new lows.
* The largest percentage gainer on the TSX was New Flyer Industries Inc, which rose 4.5 percent, while the largest decliner was Eldorado Gold Corp, down 11.1 percent.
* Among the most active Canadian stocks by volume were Bombardier Inc, up 0.5 percent to $3.78; Aurora Cannabis Inc, down 4.5 percent to $9.63 and Eldorado Gold. (Reporting by Caroline Valetkevitch in New York; additional reporting by Medha Singh in Bengaluru; Editing by Anil D'Silva and Lisa Shumaker)