54-40
This doc from testing company Anritsu will tell you everthing you need to know about optical testing using eye diagrams. See page 17 for the margin spec. Short answer is a product works at minimum requirement at 0% margin. With 45% you are over-speced by that amount.
https://rintintin.colorado.edu/~gifford/5830-AWL/Anritsu Eye Diagram.pdf
Not the kind of margin they talk about in Zacks report.
rogue