China’s economic slowdown is hitting profits at more foreign companies, a survey by an American business lobby showed, while the vast majority of respondents believed China’s growth in 2016 would fall short of the central bank’s forecast. The number of foreign companies rating their business profitable dropped to a five-year low in 2015, while 45 percent of about 500 respondents in the American Chamber of Commerce in China’s annual survey reported that revenues in 2015 were down or remained flat from a year earlier.