How is Skill Tree efficiency calculated?

Your Skill Tree efficiency percentage indicates how well-developed your Skill Tree is compared to your current overall progress.

Because the game balance requires an approximate number of unlocked skills at every stage of your journey:

• If you are ahead of the curve, your efficiency will be above 100%.
• If you are falling behind on unlocking your skills, your efficiency will drop below 100%.

Keep unlocking those skills to keep your efficiency high!