Will my credit score actually jump up 100 points?

so right now i owe my credit card 2000 and its maxed out. i went online to credit karma and it shows that if i pay it all, my credit score will jump from 618 to 726. is that even possible or will it only jump up a little bit? im going to pay it off my next paycheck in full but im wondering if it is going to happen?
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