While I don't know what the current Live status is on Bind Wound, "back in the day" it was a Rogue, Warrior or Monk that could go to 70% max (assuming no other modifiers) upon having a Bind Wound of greater than 200.
Code:
if ((GetClass() == MONK || GetClass() == WARRIOR || GetClass() == ROGUE) && GetSkill(EQEmu::skills::SkillBindWound) > 200) {
max_percent = 70 + 10 * maxHPBonus;
}
Would be formula assuming it's still true.