How is the score calculated?

The scores for each question are assigned to one of three possible categories: Improve (1 to 6), Neutral (7 & 8) and Keep it up (9 & 10).

The score is calculated as follows
The percentage of participants in "Keep it up" group, to which the percentage of participants in the "Improve" group is deducted (scores are presented without "%"). The lowest possible score is -100, the highest possible +100.