I tend to look at it a different way... I think of it as the cast iron pan being about twice as heavy as some of the likely options and four or more times others. Thinking of it as only being 1% of the total load can lead to making the same type of decisions on many items. If you did that for everything it could lead to carrying a lot more, even multple times as much. Of course if it is the only item where you think that way the impact will be more minimal.

I know that by watching each item closely I cut my base weight from 45 pounds on my first tour to a little over 13 pounds on my most recent tour. Almost every individual decision was a tiny percentage of the total weight, but they really add up and the weight of my base gear weight was cut drastically. BTW, I still remained comfortable and the gear filled all of the same functions and I found the setup much more pleasant to use.