Everywhere you look, youāll find the Pareto Principle ā also known as the 80/20 rule. 20% of minerals make up 80% of the Earthās crust, 20% of species are responsible for 80% of the worldās biomass, and in business, 20% of customers generate 80% of profits. The question is, do you know which 20% of your wholesale inventory is driving 80% of your revenue? If not, itās time to think about ABC analysis.