Stock markets in US suffered a sharp decline Friday night. Shares plunged on Wall Street, with the Dow Jones, Nasdaq and S&P 500 indexes all down more than 3 per cent by the close. The S&P 500 suffered its biggest daily percentage drop in nearly four years losing 64.8 points, or 3.19 per cent.London's FTSE 100 recorded its biggest weekly loss this year after poor manufacturing figures in China exacerbated global economic fears. Friday, the index closed 2.8 per cent lower, while markets in Paris and Frankfurt saw falls of about 3 per cent.