## Converting a recipe to fit a smaller pan??

I am in love with this bread! It is an oatmeal bread that is very large that i added soaked wheatberries to. it is made in an 9.X 5 pan, but would rather it fit into an 8 x 4 since this is a rather high-rising loaf. I am trying to learn baker's percentages, but I am still having trouble understanding. This is this recipe that I am trying to convert.

361 grams of bread flour

99 grams of rolled oats

28 grams of butter

1 1/2 tsps of salt I think that would be 9 grams

3 tbsp of honey I think that would be 63 grams

2 tsps of instant yeast. I think that would be 6 grams

283 grams of scalded milk

1/4 cup of dry wheatberries that are soaked overnight and boiled until tender. 85 grams

If someone could tell me the steps, I could probably figure it out. I think I'm supposed to think of the flour as 100% and divide each ingredient by the grams of flour such as 99/ 361= 27% After that I get lost. Also, any suggestions on how much to reduce it by?