The economy shrank an annualized 1.2 percent in the second quarter of 2015 in inflation-adjusted terms, revised upward from preliminary data but confirming the first decline in three quarters amid weak consumption and exports, government data showed Tuesday.

The April-June contraction in real gross domestic product, upgraded from a 1.6 percent fall in a preliminary report released Aug. 17, translates into a 0.3 percent decrease from the previous quarter, the Cabinet Office said.

Private consumption, which accounts for about 60 percent of Japan's GDP, dropped 0.7 percent month-on-month, slightly upgraded from an earlier-reported 0.8 percent fall due to stronger sales of vehicles and beverages.