The flash reading is here:

The 'final' has confirmed the sharpest fall in over two years.

Commentary from the report:

This is not very encouraging report. If the Bank of Japan does 'pivot' and dial back on some of its very easy monetary policy it'll make life a little more difficult for manufacturers (rating the cost of funding at the margin). Any BOJ change is unlilelyt before April, so perhaps the economic picture may have brightened a little by then.

Japan manufacturing pmi December 2022