User blog:SuperSaiyan2Link/Swampert Stats

Read the beginning of the Sceptile Stats. It's the same here.

Swampert Stats
HP: 100

Attack: 110

Defence: 90

Sp.Atk: 85

Sp.Def: 90

Speed: 60

Mega Swampert Stats
HP: 100

Attack: 150

Defence: 110

Sp.Atk: 95

Sp.Def: 110

Speed: 70

Swampert's Speed
Dodtrio runs 40mph.

Dodtrio Speed: 100

60.    60 ---      --- 100. 100

Meaning Swampert can run 60% of Dodtrio's speed, putting Swampert at 39.3mph.

Swampert's Power
Tyranitar can destroy mountains.

Tyranitar Attack: 134

110. 82.08 ---       --- 134.  100

Meaning Swampert has 82.08% of Tyranitar's power, so he can destroy that much of a mountain.

Swampert's Defence
Golem can tank a stick of dynamite.

Golem Defence: 130

90.    69.23 ---       --- 130.  100

Meaning Swampert can tank 69.23% of a stick of dynamite.