A dozen yummy donuts experience 100% increase. A double so you now have two dozen yummy donuts. Inflation.

A dozen peaches experience 100% deflation. They completely 100% go to zero. There are zero peaches. They are gone.

What would 500% deflation do? Using regular math and experiences with donuts and peaches, what happens at theoretical 101% deflation? And 500% deflation? How can something be reduced more than 100%, the point at which it already disappeared?