Bluebulb Projects' The Measure of Things presents:
2,700 is about one-and-three-tenths times the number of Steps in the Sears Tower.
In other words, it's 1.280 times the count of Steps in the Sears Tower, and the count of Steps in the Sears Tower is 0.78130 times that amount.
(a.k.a. Willis Tower) (Chicago, Illinois) (steps per stairwell)