credit score possible improvement in point amount?

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hi i just paid $8000 out of $24000 i owed. it was an installement loan the rest i have is credit cards. how much do you think this will improve my credit. it says debt amount is 30% of your score in canada. my score updated before i paid loan so its 580. hoping this pushes me close to 650 which is what is needed for obtaining new credit i think. was paying 60% interent on this loan plus other fees. worked out to 75% total interest a year. id be happy with 50 points improved but hope for it to go to 650 or close to it. this is for canada so its 900 possible for best score and 300 worst possible.