Hello dear student

The cutoff depends on many factors such as -

No. Of students appearing the examination.

No. Of students qualified for the examination.

Highest marks obtained by the students.

Category of the students.

Level of the examination means hard or easy.

So due to given data is not same every year so on every year changed the cutoff.

For more information please visit the link.

https://engineering.careers360.com/articles/ap-eamcet-cutoff

Hope that's helpful

Best of luck