In Struct Club, there are two ways to display intensity levels: Effort and Percent. The default setting is to display workout intensity by effort. However, by changing this setting, all new workouts will include percentage-based intensities. There is also a way to change a workout's individual setting. This allows you to change that class's intensity display without affecting any other class.
Option A: Change the Default Setting
From Explore or Library:
Select the Settings gear.
Select "Percent" under "Default Intensity Display."
Option B: Change the Individual Class Setting
From Library:
Select the desired class.
Press the options button.
Select "Percent."
This will apply to that individual class's intensity display without affecting any other class in your Library.