Type.............Offense..............Defense
Bug ................-50......................-150
Dark................50..........................0
Dragon...........50........................-50
Electric..........100........................50
Fighting.........200......................-50
Fire.................250......................-50
Flying.............150.......................-50
Ghost...............0.........................100
Grass............-50.......................-300
Ground..........300.....................-100
Ice..................200......................-350
Normal.........-200........................0
Poison..........-200 .......................0
Psychic............0.......................-200
Rock...............250 ...................-300
Steel.................0.......................350
Water.............150........................0

-For Offense-
+100pts for being super effective against something. In other words, it'll dish out 100% more damage.
-50pts for being not very effective against something. In other words, it'll deal 50% less damage.
-100pts for having no effect on something. In other words, it'll deal 100% less damage.
+0pts for normal effect.
-For Defense-
-100pts for being weak against something. In other words, it'll take 100% more damage.
+50pts for being strong against something. In other words, it'll take 50% less damage.
+100pts for being immune to something. In other words, it'll take 100% less damage.
+0pts for normal effect.