So for example, using a real example I'm faced with
The maximum range is 0.50 and the minimum range is 0.025. Say I have a number 0.33. At what percent is it in that range.
Google searching reveals many dozens of topics discussing a maximum range between 0 and a max number whee you divide the 2 numbers to get the percent but in the case here it's not 0 it's an arbitrary number as the minimum.
Any help here would be great, thanks!
Simply subtract the lower number, then divide by the difference between the two numbers.
$$100\left(\frac{x-m}{M-m}\right)\%$$
The hundred multiplication is to fix the units.
In your example, you should get $100\frac{0.33-0.025}{0.5-0.025} \approx 64.2\%. $