Ho oh master you start with the base recruit rate and then PLUS the bonuses 24% for level 90-100 and an extra 10% for frien bow equipped.
To topaz archer i also heard that holding the part that that regi would drop boosts the chance of getting it but i dont know if its tue.
Interestingly today i was getting my last regi (regirock) and i had done ab out 10 previous beating then escape orbing out while i was lv 93 with friend bow and i didnt get it.
Then i remembered about the parts and i got rock part out of starge and had it in my toolbox the next time i went to beat regirock and he joined me.
Probably just a coincidence but interesting.
The legendaries you have to buy the freind areas for are:
3 regis
3 dogs
mew
mewtwo
ho oh
2 lati
The ones you get automatically from the legendary upon recruiting it:
3 birds
rayquaza
deoxys
celebi
lugia
kyogre
groudon
And you get jirachis friend area (mt moonview) by doing a mission with a friend area as the reward that is randomly on the bulletin board.
And for the starter of the tread redblueyellow's percentages are correct. ;123;