If you belong to open category then I am sorry to say that you cannot get into iiest as atleast you need to have a rank of 30k and around to get in with the least preferred branch . But seeing your percentile it seems that your rank would be above 100k

You can look for your self the cutoff of iiest here

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.careers360.com/question-jee-mains-marks-wise-cut-off-for-iiest-shibpur&ved=2ahUKEwjb163f3_LiAhXIfSsKHY6ZAn4QFjAIegQICRAB&usg=AOvVaw1ZtKueEJdjbgJ9v-rnzuvq