NPC Scan Addon

Using NPC Scan, does anyone notice the attempts that are marked on the enemy targeting icon? For example, I am farming Chewed-On Rains of the Terrified Pack Mule, while killing “Hexthralled Crossbowman” it has the attempts out of 4,000. Right now I am at 4025/4000. Is the attempts the average people have received the mount to the right of my attempts?

Are you sure that’s NPCScan and not Rarity?