Exp Formula Returning Back To Normal?

or use this exp formula that Locky92 create :

Example :
For party of 2
Level difference 0-5 : 60% EXP for main attack, 40% EXP for party member
Level difference 6-15 : 70% EXP for main attack, 30% EXP for party member
Level difference 16-30 : 80% EXP for main attack, 20% EXP for party member
Level difference 31^ : 90% EXP for main attack, 10% EXP for party member

@ Boss Fight : leecher wont be able to get any exp unless they can deal some damage to the boss.