The "mid-80s range" typically refers to the numbers 84, 85, and 86.
While interpretations can vary depending on context, the term "mid-80s" generally centers around the middle numbers within the 80-89 decade. It's less ambiguous than simply saying "the 80s" which encompasses a much larger spread of numbers.
For example, if someone is talking about a grade or score, achieving "mid-80s" generally implies a satisfactory, above-average performance, but not necessarily an outstanding one. As referenced in the Quora excerpt, the mid-to-high 80s in university requirements indicates a GPA or percentage score between 85-89. Therefore the mid 80s would logically sit slightly lower.
