[Hilltop Raceway]

If you scale it down to 75%, the you are scaling it down 25% of what you have now.
Now being 100% of 24th scale, 75% of 24th scale might be 32nd scale or close.
As SCM stated, the absolute best way is trial and error.
Different decal brands of the same car seem to fit differently.
The numbers can give you a good ball park figure though.
24 and 32 are both divided by 8, so 3 8s make 24 and 4 make 32.
So, you can scale the decals down by 25% by setting a 75% final product.

Rich.... don't ask me how I did in algebra.

What'd he just say??? ... RM