This is not something that we can calculate or predict.. There have been many threads previously running analysis and estimates for each ITA cutoff.. Initially it was such that the score would gradually decrease from 800-350.. However CIC abruptly plummeted the score from 735 to 481 in the 5th draw..It was never expected..After 5th draw predictions started that score would now keep decreasing on every draw and will go down till 250.. But to everyones surprise the score went up from 453 to 469 in the 7th draw..
CIC makes the draws based on
Their calculations and government decisions
Prev backlogs from past years
The no. of ITAs rejected in the past draws
New candiates entering the pool each day
LMIA jobs issued
PNP dates
Current Job requirements in the Canadian job market
Unfortunately no one except CIC would have a correct picture of all these and any predictions on this would prove futile..
Facts that we could probably be sure as of now (observing the current pattern) are
Draw would mostly happen on friday nights (Canadian time)