The prospect of Donald Trump becoming president rattled financial markets on Tuesday night, with Dow futures taking their biggest plunge since the 2008 financial crisis – approaching 1,000 points. Mayhem hit markets as investors panicked over Trump’s increasingly likely victory. Shortly after the Republican nominee won Ohio, S&P 500 futures slid more than 5 percent, and the U.S. dollar fell against the yen. Markets in Hong Kong, Tokyo and Australia had fallen by about 5 percent as U.S. election results continued to roll in. The Japanese Nikkei was down more than 4 percent, and the Mexican peso went into free fall. Analysts warn that a shock Trump win could bring sheer chaos to markets, with Reuters market strategist Sean Callow quoted as saying, “Markets are reacting as though the four horsemen of the apocalypse just rode out of Trump Tower."