May 5 (Reuters) - Wall Street stock index futures fell on Sunday after U.S. President Donald Trump announced he would hike U.S. tariffs on $200 billion worth of Chinese goods this week and soon target hundreds of billions more.

* S&P 500 e-minis were down 47.5 points, or 1.61%, with 41,048 contracts changing hands.

* Nasdaq 100 e-minis were down 139.25 points, or 1.77%, in volume of 7,976 contracts.

* Dow e-minis were down 443 points, or 1.67%, with 5,452 contracts changing hands.

* Benchmark 10-year note futures last rose 16/32 in price. (Reporting By Sinéad Carew; Editing by Daniel Wallis)