U.S. stock index futures jumped by more than 3 percent early Tuesday, signaling a partial rebound from the worst day for Wall Street since 2008. The Dow Jones Industrial Average closed down by 2014 points at 23,851 on Monday, a decline of 7.8 percent. The S&P 500 and the Nasdaq also lost more than 7 percent. New York Stock Exchange trading was paused for 15 minutes Monday morning due to a "circuit breaker" tripped by the sharp opening dives of the Dow and the S&P 500. The declines were the most recent big swings for U.S. stocks as fears mount of economic fallout from the rapidly spreading coronavirus outbreak. On Monday, Saudi Arabia contributed to market panic by slashing oil export prices, sending global crude prices plunging by more than 20 percent.