% of means percent of. 100% is 1:1. If the volume is 0.1 lots, then 100% of 0.1 lots will be 0.1 lots. 0.1% of 0.1 lots is..... something very small. So, with this option use values like 100, 150, 200, 300, 400... to increase or 80, 50, 25... to decrease the size of the volume.
Or if you use it with that Formula, use Fixed lots option. I have to add dynamic option...but other things are in my head, so I will try something else first.
