High Quality Content by WIKIPEDIA articles! Baker`s percentage is a baker`s notation method indicating the flour-relative proportion of ingredients used when making breads, cakes, muffins, and other pastries. It is also referred to as baker`s math, or otherwise contextually indicated by a phrase such as based on flour weight. It is sometimes called formula percentage, a phrase that refers to the sum of a set of bakers` percentages. Baker`s percentage expresses each ingredient in parts per hundred as a ratio of the ingredient`s mass to the total flour mass (that is, the unit mass).