Uh oh, I have some bad news
Evolite does not alter base stats, it gives a 1.5 boost to actual stats. This is not the same as a 1.5 boost to base stats unfortunately.
Roughly speaking you can figure out the base stats of an evolite Poke by using this formula..
B * 1.5 + X
B = The Pokemon's base stats
X = 9 if the Pokemon has not invested EVs nor a nature into that stat, and 25 with max EVs and a boosting nature.