Hey Aspirant, 

All the Architecture College taking admission on the basis of NATA score actually calculate your Merit Score  which is calculated by using NATA score and 10+2 percentage too.

The top College for Architecture in Kerala are

• Government Engineering College 
  
• Rajiv Gandhi Institute of Technology 

These both college offers admission if your MERIT SCORE is above 100

Your Merit Score - ( NATA score)/2 + 12th percentage 

                               - 66 + 90 = 156

Your merit score is more than enough to get admission is good college in Kerala