Decrease 1 st at each end of every 12th row 4 times?

I’m knitting the front piece of the dress and got to 67 stitches. I’m not sure how to get to 59 stitches by:

Decrease 1 st at each end of every 12th row 4 times

Thank you

Also it said cont in st-st beginning with a purl row before " the decreasing part"

Hi Zoey
Can you provide us with a link or a name of the pattern? First off the difference is 8 sts so if you are decreasing at the end of each row 4 times that is your 8 sts. Sounds like your decreases are on the knit rows, therefore you are going to say that your first knit row where you are beginning your dec is row 1. So dec both beginning and end of row 1, 13, 25, and 37th rows giving you your 8st decrease

Hi Trisha,

The pattern is from a book. Here is the section in details:

Next row (RS): knit, dec 1 st at each end of the row (67 sts)
Cont in st-st, beg with a purl row, dec 1 at each end of every following 12th row 4 times (59 Sts)

Please let me know if this is sufficient.

Knitted dress from Easy baby knits clothes & accessories for 0-3 years old by Claire Montgomerie