During a workout you can adjust power up/down by percentage via the workout settings or keyboard shortcuts. You can only see the current percentage by opening the workout settings, or by hitting the keyboard shortcut keys. In the latter case, you can only see 1 percent higher or lower than the current settings because hitting the key increments the setting.
I would like to see the percentage adjustment displayed in some manner in/near the workout power data fields. In addition, the first tap of a keyboard % power shortcut should first show the current setting without incrementing it.