The CSAT formula
CSAT = (number of 4 and 5 ratings ÷ total number of responses) × 100.
Only 'satisfied' (4) and 'very satisfied' (5) responses count as positive. Neutral 3s count against you. That's on purpose: a customer who felt 'fine' about a support interaction is not a customer you've won.
Example: 200 responses, of which 60 are 4s and 115 are 5s. CSAT = 175 ÷ 200 × 100 = 87.5%.
