HI,

It's very difficult to tell the EWS rank corresponding to AIR but as per my analysis of observing JEE-Mains previous years ranks vs marks ,for 27000 AIR ,your can expect an EWS rank in the range 2800-3200.

Last year in Jee-2019,one of my friend got 97.2 percentile with AIR 37160 and he was an EWS student.His EWS rank was about 4715.So from this,you can expect an EWS rank between 2800-3200.

Hop this helps