Stocks tumbled worldwide on Monday amid fears that the US economy could fall into recession. Stock markets from Tokyo to Frankfurt and New York were down after weak US labour market data on Friday left global investors spooked, although experts said the volatility was likely a market correction, rather than a crash. Japan’s Nikkei 225 index dropped more than 12% on Monday, leaving it more than 20% down from the record high it saw in July, while Germany’s leading index, the DAX, had fallen around 3% by mid-morning. The eurozone’s EURO STOXX 50 suffered similar losses, while on Wall Street, the …