Generally you start decs about 6-8" from your beginning, depending on how long you want it and if you want to turn up a cuff. You would normally decrease anywhere from 8-12 sts per round, so you need to find a number that divides into the sts you have. 114 isn’t going to work, but that should be okay. Maybe decrease about 4 sts on one round, then start in a real decrease round on the next. K8, k2tog all the way around, knit one round, then k7, k2tog around, knit one round. Keep up this pattern knitting one less st between the decs and one round between dec rounds. If you want, you can see what decreasing on every round works out to, but that would only take a couple of inches. Decreasing in this way should take you down to about 11 sts. Try it on and if this seems like it will fit okay, cut your yarn with a 4 inch tail and pull it through the sts left on the needle like a drawstring; I pull it through twice to make it secure. Then weave in the end on the inside and trim.