Taking a look at the lootbox page here:
https://wiki.spiralknights.com/Clockworks_Prize_Box_Promotion_April_2026
It looks like the probability is off? there are 7 groups of items w/ probabilities of 1, 2, 2, 5, 50, 25, and 24% chance of acquiring those items, but adding those chances up comes up to 109%?
The numbers shown are loot pools not the actual percent chance per item, so if it says two items are a 2% chance its actually that the items are both in a loot pool that you have a 2% chance to hit.