Growth stocks led the decline, with Microsoft Corp MSFT.O and Apple Inc AAPL.O the biggest weights on the S&P 500 and Nasdaq. By Caroline Valetkevitch NEW YORK, June 10 (Reuters) - All three major U.S. stock indexes were down at least 2% in Friday afternoon trading as a steeper-than-expected rise in U.S. consumer prices in May fueled investor worries about more aggressive interest rate hikes by the Federal Reserve. The Labor Department's report showed the consumer price index increased 1.0% last month after gaining 0.3% in April.