Page History
...
The Latency Impact in % column represents the percentage ratio. A rate of 100% means that the relay location is two times slower compared to the fastest one. However, keep in mind that this doesn't mean that the relay region is bad. In the example below, the slowest relay region, SWEDENCENTRAL was 60% slower than WESTEUROPE. With an avg latency of 45.26ms however, it is still well within the <60ms that Microsoft states as optimal for reaching the Microsoft network, let alone the Media relay.
Teams Relay Location - Map
...