Uber CEO Travis Kalanick has quit President Donald Trump's council of business leaders, according to an internal memo obtained by The Associated Press.

Kalanick wrote to his employees that he'd spoken with Trump on Thursday to "let him know that I would not be able to participate on his economic council. Joining the group was not meant to be an endorsement of the president or his agenda but unfortunately it has been misinterpreted to be exactly that."

Over the last week, at least 200,000 people have deleted the Uber app from their smart phones in protest against Kalanick's position on the council.