partial match

I'm in the middle of setting up a new micro niche / mini authority site though have the option of either: A) An aged non dropped .biz domain, previously used in a different niche though with a relevant brandable domain. Vs B) A branded partial match .com domain. From both an SEO point of...

Let's say I want to rank for best refrigerator for sale. That's 4 words. If I target refrigerator for sale, how much in % does it count towards the full match keyword? 75%? Since there is 3/4 of keyword. Let me hear your thoughts.