I need help with my statement of purpose for changing major

Hi, I'm international student in US. Now I want to transfer from Chemical engineering to computer science.

Sorry, my first language isn't English, so some sentence may read weird.

After one semester’s study in XXX University, I found the knowledge of computer science is important in engineering. For example, I took the course: Chemical Reaction Engineering which is the core course of Chemical Engineering. The key part of the course is using the Matlab to model different reactors and calculate the changing of parameters (e.g. concentration of reactants during the process). Also, by talking with classmates and professors, I know that, in practice, database is used for managing the warehouse in factory and CAD is used to design required reactors, and in lab, Fortran is used to work with the experimental data. So I thought computer science is the key to apply what I’ve learned.

On the other hand, during my study, I enjoy programming (e.g. modeling reactor and reaction process), so I feel I have more interest in programming rather than deducing the theoretical formulas in Thermodynamic or Transport Phenomenon. For that reason, I plan to change my major to computer science. In the future, I plan to use my knowledge of database to manage corporate data and program the required software to solve engineering problem.