Nov 172013
 

First, you need to figure out where the increases go. Suppose you have 98 needles in work and the pattern says increase 13 stitches evenly across the row.

Compute the approximate placement of the decreases using the following formula:

(current # stitches – # to increase) / # to increase
(98 – 13) / 13
85 / 13
6.53 rounded down = 6