Add up all the % in the formula. In your example that would be 163.84%

To figure out how much flour to base the formula on, take the total amount of dough you need, and divide by the sum of the %.

For example, say you wanted to make (2) 300g pies. You would need 600g of dough if you didn't waste any. Let's add 2% extra for waste, so you need 612g of dough. To figure out how much flour you need, divide 612g by 163.84%, and you get 373.5g. You can apply your baker's % to this number to figure out the other ingredients.

Flour 373.5g

Water 228.1g

Salt 9.3g

Yeast 1.1g

Total = 612g