First of all, you haven’t mentioned the name of college in which you want to get admission in.

Now, only 50% marks is required in10+2 level to be eligible in NATA

And 40% is required to get qualified in NATA, that is , students scoring 80 out of 200 will be eligible for further NATA admission process.

So, you do have a fair chance of been selected for NATA.

Thankyou!