How to Crochet a Double Crochet Decrease
Yarn over and insert the hook into the work (fourth chain from hook on starting chain)
Repeat steps 1 and 2 into next stitch (another dc worked up to last step).
Yarn over and draw through all three loops on hook.
1 dec completed.
To decrease any other stitch (hdc, tr, et cetera) work each stitch up to the last step then yarn over and draw through all loops on hook.