My window is old, 30+ years but still perfect. I ordered a new blind which when it arrived it was not quite correct, my window is a GGL -8, Your Leigh Burns has done a superb job in sorting the problem for which I am very grateful. I had assumed 08 and -8 were the same item code.
Net Promoter Score is a loyalty metric used as a KPI for customer experience, measured on a scale of -100 to +100.
To calculate the NPS, we first ask customers to answer the question "How likely is it that you would recommend this company to a friend or colleague?" on a scale of 0 - 10.
Customers who answer 0 - 6 are Detractors, 7 - 8 are Passives and 9 - 10 are Promoters. The NPS is the sum of % of Promoters - % Detractors.