U.S. Dow Jones falls 831 points, biggest one day drop in eight months

The Dow Jones Industrial Average fell 831.83 points, or 3.15 percent, to 25,598.74, the S&P 500 lost 94.66 points, or 3.29 percent, to 2,785.68 and the Nasdaq Composite dropped 315.97 points, or 4.08 percent, to 7,422.05.