According to exit polls: Trump drew his support from older people, white men and women, people with less education (high school/no college degree), and middle class Americans. Clinton was popular among younger people, blacks, Hispanics, Asians as well as people with at least a college degree. Religious and evangelical Christians supported Trump while other religions supported Clinton. Also people who live in urban areas supported Clinton while those who live in rural areas supported Trump
Do businesspeople support Trump? There are many businesspeople and we don't know how many of them support Trump. We do know that of the CEOs and owners of the largest companies on Wall Street, Silicon Valley and so forth support for Trump was very thin. Trump does not appear to have been a very good businessman, and is among other things a racist, misogynist and xenophobe. Successful businesspeople try not to be those things: they are bad for business after all.