What is the fine-grained topic of the following text: Note - 2: Exact aggregate % of marks before decimal as written in the marks sheet of 10+2/Intermediate/Equivalent OR calculated as per the rules of concerned Education Board shall only be considered (For example 49.99% should be taken as 49% and not to be rounded off to 50%). Only return the topic.
Calculation of aggregate percentage marks in 10+2/Intermediate/Equivalent education as per specific rules.