> Inflation from 1993 -> 2023 is 113%. Slipping a waiter an extra $20 has 113% less meaning in 2023 than it did in 1993.

That $20 has 53% (1 - (1/2.13)) less meaning in 2023 than in 1993.

If it had 113% less meaning, the 2023 meaning/value would be negative and the waiter should rationally turn it down.