Workout Target Data

[MedTechCD]

I think you can only do a visual comparison in the charts.
The target workout should be displayed in the background.
See example here: (clearly visible in the second 12m interval)

Planned workout power/HR/pace vs actual

The power, heart rate and pace charts on the activity timeline chart now show traces from the planned workout when one is paired: [Screen Shot 2021-09-21 at 06.49.48] You can adjust the offset in “Options” (“Workout” slider) to get the planned workout to lineup with the actual activity: [Screen Shot 2021-09-21 at 06.52.06]

No numeric comparison can be done per interval AFAIK