From Longman Business Dictionary
quantifyquan·ti·fy /ˈkwɒntəfaɪˈkwɑːn-/ verb (past tensepst and past participlepp quantified) [transitiveT] to measure something and express it as a number, especially something that is difficult to measureQuantifying the effect of advertising on sales is difficult.
—quantifiable adjectiveadjCan the project offer a quantifiable payback?
—quantification noun [uncountableU]the quantification of future loss