u/Impossible_Complex47

So a few months ago when I used to fill up, it would say 450 miles now I’m lucky to get like 407 anybody else have this problem? Is this because gas prices went up and maybe gas is like water down now or is something wrong with my gas tank? what could be the issue? I’ve tried different gas stations and every time I get around just 400 instead of like 450 when I used to.