[Ness Lange]

It’s just

n = effect("Slider Control")("Slider").value;
n.toFixed(1) + "%"

In the end

[Ness Lange]

So it just harmonizes with:

f*100*thisComp.layer("Keys").effect("Sound Keys")("Output 1");

Don’t know why exactly this relation. Probably because of the way the’offset’ is defined.