Garmin connect indicated the % of activity (e.g. steps) for amounts less than 100%. But when you overachieve, Garmin maxes out at 100%. Would love to see the simple calculation that indicated greater than 100%. For example, if my step goal is 10,000 steps and I complete 11,000 steps, the percent of goal should be 110% (currently it would say 100% regardless of how many steps over goal I do).
If you have a watch that supports Connect IQ, there are a number of watchfaces that will give you this info on the watch itself, but it does make sense to also do it in Garmin Connect itself.
The full page view of "Connections" also shows true percentages (the dashboard view does not) although it is often necessary to refresh the page to see the dates of the most recent results for some reason!