Resistance calculations

Just got into maps, 8/10 tier 1+ maps complete. Started calculating out some resistances.
99 fire from gear - shows 48. -51% penalty
89 cold from gear - shows 38. -51% penalty
135 lightning from gear - shows 60. -75% penalty

This is without adding in quest and monster reward buffs, but even if I did add those in the, the penalty would be even greater. I can see the fire and cold to be reasonable but that would make the penalty for lightning greater than 85%, knowing I have got at least one lightning buff through campaign.

Did math multiple times to keep making sure my numbers were correct.

If I missed something let me know. If you notice the same thing let me know.

Edit: Also nothing from passive trees adding or subtracting resistances