What is the relationship between the two groups of numbers? Are they related by percentage (i.e. for every ~5% decrease on the left side, there is a one-unit decrease on the right side) or exponentially? Or something else?

If you have an equation which expresses the relationship between the two groups of numbers, you can simply use [expr] with float arguments ( $f ) to cover all the intermediate values.

You can use [scale] only if you know the exponential base, and the relationship between the numbers follows the equation in [scale]‘s reference page.