It is scoring you, and everybody else. The percentage is the number of right answers you have in the last 30 days, divided by 30 and expressed as a percent
so
27 questions right
30 days
27/30=.90
90%
so
27 questions right
30 days
27/30=.90
90%
Force nothing, waste nothing, leave nothing undone
Geliked door hermank and AlessandroSPQR