** New Zealand's benchmark .NZ50 falls as much as 0.9% to 13,104.90 points, its biggest intraday pct drop since August 22
** Data shows gross domestic product (GDP) fell 0.9% in Q2 from the prior quarter, worse than analysts' and central bank's forecasts of a 0.3% fall
** Kiwi Property Group KPG.NZ is the biggest percent loser on the benchmark after falling as much as 2.8%, its biggest intraday pct drop since July 24
** Infrastructure investor Infratil IFT.NZ is down 2.3%, electricity co Mercury NZ MCY.NZ is down 2.1%
** YTD, NZ50 slightly up 0.1%
(Reporting by Nichiket Sunil in Bengaluru)
((nichiket.sunil@thomsonreuters.com))