6-1=5 100/6=16.66 but add that to we all have every campaign mission. There's roughly around 52-65 exotics in total in the game let's take the middle average 59 100/59=1.69% per exotic, multiply that by 2= 3.38% so just by that we are no were near 20% if adding all the games content, maybe around 3-7%.