Ok, in the options screen where you can equip items on your members, there are two numbers on the bottom of the screen that can be +-(#). They change as I swap weapons in and out, but I have no idea how or why they change. I can't figure out any methodology to the number increase/decrease. Does anyone know what these numbers are based on exactly? And if you do, do you think you can come up with a specific example to help me to understand it?

Thanks in advance.