Sorry in advance if this is a very simple question and thanks for any help you might have.
I have a value of $3.82$.
I want to have a minimum and maximum difference allowance of say 1. So
min $= 3.32$ max $= 4.32$
I would like the min to be represented as -100% and max to be 100%. Essentially 3.82 would be 0%.
I have another value that is $3.54$. With the above in mind, how do I work out what percentage this number would be in my scale?
I did have a go using this formula but it gives me a scale of 0 to 200. Which isn't want I'm after, which is a scale of -100 to 100. How to calculate percentage of value inside arbitrary range?