Question

Math question!!!!
Ok, what is the difference between solving percent problems using proportions and solving percent problems using equations?

Why do I sometimes have to use proportions to solve percent problems instead of using equations to solve percent problems?

In which occasions do I use proportions to solve percent problems?

In which occasions do I use equations to solve percent problems?

I know how to do this, im just confused on when to use which method Pleeeese help!