What Pokemon increase its Base Stat the most on evolution?

Question

For example: When Trapinch evolves into Vibrava, it's Speed goes from 10 to 70. In a similar way, what Pokemons Base Stat increases the most by evolving?

Comments

Ohhhhhhh God, this is gonna be a long one.

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Can we just put some that don't change at all? Because the majority of them do.

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I'm only asking for the 1 that increases the most.

Answer 1

Magikarp, when it evolves its base stats get raised by 340 points.

Comments

We should combine are answers Jofly XD

Answer 2

As J1309 said

But, there is one more.
Feebas, when it evolves its base stats get raised by 340 points.

Comments

I cannot give a BA to any here, but both get +1. Also, I checked and I am very confident Nincada increases a single stat the most by going from 40 to 120 Speed.

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Ok, intresting fact Nincada is the only pokemon who get lower base stats when evolving (Shedinja) ;D

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Mainly because Shedinja has HP base stat of 1