I've been reviewing credits for project teams for a while now and cannot figure this out to save my life.

One of my team members has mistakenly entered a bunch (about 88% by tonnage) of commingled waste as diverted on the form. When I changed it to "Waste is commingled; diverted offsite" just to see if the form would ask for backup, the total percentage diverted from landfill dropped from 88% to 77% inexplicably. I've searched the forum up and down and can't seem to find anything that explains this.

Admittedly this is an old project (and thus, an older form), but I've never seen this before.

Any suggestions?

Thanks!