Not sure how you landed on 1.85% there, but the total weight changes as more people claim their NFT's, so let's say if 100 have claimed their Holo NFT that would already mean total weight is 2500 and if you're one of them you get 25/2500.
As we'll release more achievements we'll also add more zing to the reward pool which is currently 1000 zing per day.
So that means even less ?
It depends on the total claims, this way those who claimed early and followed the project get an advantage in hourly claims. If eventually everyone has claimed it'll stay at the same rate.