Appeal Letter

So I am a current student at another university, freshman, looking to transfer to Purdue’s pre-pharm program. I was denied admission a couple of days ago, and was very shocked as my scores, gpa and transcript are well above the average until I found out the reason I was denied was because of a missing calculus credit that I am taking over the summer anyway. I was wondering if it would be worth it to appeal the decision after I complete calc to show them I definitely would have it, as I literally have everything else and more. I want to go here so badly and I am in an awful place now and just want to have an honest opinion of this situation. Thank you