1. Add up all the gram amounts to get a total # of grams. Call it T2. To get percentage, take the gram amount of an ingredient and divide it by the Total grams. (then multiply by 100)So, if you have a formula that is 200g total.And one of the component materials is 10g.The percentage of that ingredient in the formula is = 10g/200g = 0.05 x 100 = 5%
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