I have a look at the meaning of "negative surprise" from google but there is no clear explanation so far. When listening to Bloomberg Market Concept, in the picture, Surv(M) < Actual, while Surv(M) is the median of analysts about what the value of economic indicator would be upon release and the Actual is the one from the official announcement. In this case, they say that it is a negative surprise.
I am wondering why they use the word "negative surprise" and whether there is any easy-to-understand explanation for this term in real life?