The Survey
It all starts with an NPS® survey question, which typically looks something like the following -

The Ratings
The customers can answer this question by selecting a number between 0 (least likely) and 10 (most likely). Depending on these numbers, they are categorized into
Promoters
These are customers who selected 9 or 10. This group represents the most satisfied customers and is more likely to suggest your brand to others.

Passives
These are customers who selected 7 or 8. These customers are okay with your offerings, and they may or may not suggest your brand to others.

Detractors
These are customers who opted for 0 to 6. They are disappointed customers who are least likely to suggest your brand to others.

The NPS® Formula
The NPS® formula is simple. It’s the subtraction between the percentage of promoters and detractors.

% of Promoters
-

% of Detractors
For example, If 50% of your customers are promoters and 20% are detractors,
then the NPS® score is 30.

Promoters
-

Detractors

NPS® score