How can we lose the participation % on HoT map for those box reward? can i lose it when i get the last box? (i think it was the 3th~4th reward box?) or when i change map and come back?
Participation is instance-specific. You can leave the map (at least for a short period) and return, but if you wind up in a different map instance, your participation in that map will be zero. The only other way I know of is if you aren’t doing events for an extended period it will decrease slowly over time.
