TORONTO, Sept 16 (Reuters) - Canada added 39,400 jobs in August, driven by a pick-up in hiring in the trade, transportation and utilities sector, a report from payroll services provider ADP showed on Thursday. The July data was revised to show 21,600 were lost rather than a gain of 221,300. The report, which is derived from ADP’s payrolls data, measures the change in total non-farm payroll employment each month on a seasonally-adjusted basis. (Reporting by Fergal Smith; Editing by Toby Chopra)