Hello Aspirant,

Each year the ranking is changing according to marks because it depends on the factors like difficulty level of exam, number of candidate appeared for exam etc.

Try to get a good percentage in your boards, i.e. above 90% and to make your rank lie under the 1000, a candidate may need to get around 130–160 Marks in KCET .

For further details regarding marks vs rank go through following link;

https://engineering.careers360.com/articles/kcet-marks-vs-rank