Its not the amount of claims that changed, its your personal mrai. The amount of mrai you get is equal to your claims x claim reward. At the time you checked the claim reward was high, but as the day progress and more people claim your claim reward lowers. You can check out what the estimated claim reward will be at the end of the day on this page: https://raiblockscommunity.net/faucet/paylist.php . So all you need to do is take the amount of times youve claimed and multiply it with the estimated claim reward , then youl know what amount of mrai you will end with at the end of the day.