Single post in Your Guide to 90%+ Breeding Pairs

i have a (probbably dumb) question.. I had a break since early 2020 and it seems that my breeding pairs are not up to date anymore because now there is a difference between base % and total %.. if I try to get the couples to (almost) the same level.. do they get their high % again? or do I have to do something else too? also if people are selling breeding pairs, do they tell you the base % of the total %? I don't know if that changed too