Standard ratio for raglan shaping is usually each section, (back, front, sleeve 1, and sleeve 2), all increase/decrease (depends on whether you’re working too down or bottom up) by 2 sts every X rnds. X depends on your gauge since you will need to change circumference from collar to full bust within the armscye depth. With that said, standard raglan shaping like this only works well on certain bodies, so you can also disregard the simple raglan and work a complex raglan in high you figure the rate of shaping for each of the sections separately; meaning you can increase/decrease at different rates for the sleeves vs. the body. Or if you’re large busted, you can even use a different increase/decrease rate for the back vs the front. I don’t recommend any extreme differences on the latter. I do recommend researching raglan shaping. There are some excellent books that will walk you through the process. I’ll attach pictures of a few.