Is your child a current student? Academic counselor should be able to provide guidance on 2nd year transition to major, based on GPA. I don’t believe the information is published, certainly not in the Data Digest. This is what the above answers are referring to.
Or are you asking about an initial application? All engineering students are accepted into First Year Engineering, so there is no acceptance rate by major. It may ask for your intended major, but it has no impact on admissions and isn’t at all binding when students need to select their major near the end of freshman year.