Here is the link for the target projections: https://content-calpoly-edu.s3.amazonaws.com/ir/1/images/2019-20%20Enrollment%20Projections%20for%20Continuing%20Students%20-%20no%20total%20error%20adj.pdf
The table shows the # of projected Freshman Applications for each major (FTF Apps) and the target # (FTF Target). SLO admits more applicants than target spots so depending upon the yield. For a general idea, you can assume a 33% yield which gives above a 80% projection acceptance rate.
So for example EESS, target is 75 spots with 251 applications. 75x3/251= projected acceptance rate.
The actual acceptance rate could be different.