Probably a dumb question ... sweater armhole

I am knitting my FIRST sweater!!! Rooster Sweater from [I]Animal Knits.[/I]
So, I just got done knitting the main part of it - 58 rows, 76 stitches per row.
I am at the part now to shape the armhole and it says cast off 5 sts beg next two rows. Then it says “Cont to completion of row 95” So, at this point am I knitting 66 sts to complete 85 rows??
I just wanted to be sure before I got started!! :slight_smile: Thanks!

Yes, the sts you cast off form the underarm, so finish the back with just 66.

Thank you!