More people than that would have joined the 431-440 range but others who were in that range moved to higher CRS scores with a new IELTS score or any other factor.
Only the net increase in 441-450 range was higher than the net increase in the 431-440 range.
At lower CRS ranges the net increase is lesser as there are lot of folks who improve their CRS scores and go up the ladder!
Try reaching it, it will get you a huge boost on crs. If applicable, you can also consider to come to study in Canada. And eventually earn some Canadian work experience after you graduate
What should we expect for CRS cut-off to be in case 2750 invites are issued on 27 December 2017, and another case, if there is no draw on 27 December, but there is a draw on 3 January 2018.
That is just CRS score distribution table which shows the total number of people in the pool as of 18th Dec. If your CRS is not 446 then you do not have to worry. If it is 446, then you should have created your profile before: October 02, 2017 at 14:56:53 UTC.