This is weird, someone in the OP thread said what you have. A portion of fries can be 80 individuals, the proportion of all fries in the fryer might be 0.1; pr

This is weird, someone in the OP thread said what you have. A portion of fries can be 80 individuals, the proportion of all fries in the fryer might be 0.1; proportions are often expressed in percentages. So "the proportion of the population using my tool is 1%" means 1/100, ie 0.01 of a population normalised to unity. Pro-portion is like pro-rated, it's taken as in comparison to the whole (normalised to the whole, if you like). "What proportion did you contribute" == what share of the whole did you contribute. [en-gb native]