Uber recorded an adjusted loss in earnings before interest, taxes, depreciation and amortization of $837 million (636 million pounds) in the second quarter.Shares were down 2.9% at $33.72 in after-hours trading.Ride-hailing trips, in the past responsible for nearly two-thirds of Uber's revenue, increased 5 percentage points from their low in April, but gross bookings remained down 75% from last year.Uber's chief executive officer, Dara Khosrowshahi, told analysts on a conference call on Thursday that rides recovery depended on the ability of different countries to contain the virus, with the recovery so far led by Asia, excluding India.In Hong Kong and New Zealand, ride bookings at times exceeded pre-COVID-19 levels, while trip requests in.