Hello ,

See , if you are expecting 89 marks then it is completely depends on your accuracy and how much confident you are for your marks. If you are 100% sure about your expectations then you may have score 85+ . And also it depends on the subject. If you are expecting 89 in mathematics then may be you will get the same marks . But in the case of langauge paper , you have to consider all the grammer portion too.

I hope this helps you!!