They way I set up your histogram will make the scanner do the math for you. All you have to do is take the percent in the histogram and apply it to the VE. Couple different ways to do it. You can copy the histogram and paste special - multiply by percent. Or you can multiply by percent - half, which will move the VE numbers slower. Or you can tweak each cell maunally. Shoot for an AFR error between 0 and -2%.
This config is not set up for your MAF, but i did throw a MAF Error histogram in there so you know what it looks like. All you have to do is put Maf frequency in Hz in the primary table and it will plot the histogram. Of course do this when your all done with the VE.