The titer of Phage stock 2.2* 108 was added in MOI 5. After 5 minutes, the remaining phage count was 3.7* 106 . What is the degree of phage absorption?
Isolation and characteristics of new phage JK004 and application to control Cronobacter sakazakii on material surfaces and powdered infant formula - ScienceDirect
This is really a simple math problem, ending titer / starting titer. The MOI is not important except if too high you might hit saturation of the phage binding sites.