I want to make a discount system. Is there any way I can do that. What I mean is, I'll put discount on a particular placeholder and when I change the discount percentage, all the other values will change.
For example I have something in shop that costs 10k$. I put a discount numeric value and it changes. For example 40% discount will make it 6k$. And every single item which uses that placeholder will change price too.
I need it for a shop which has 300 items for purchase. So I need help