w is of type http.ResponseWriter
This is fine:
fmt.Fprintf(w, statusPercentage + " " + mostUpToDateStatusDownloaded + "/"+ mostUpToDateStatusOverallData)
output: 100 488 MB/488 MB
This causes a problem:
fmt.Fprintf(w, statusPercentage + "% " + mostUpToDateStatusDownloaded + "/"+ mostUpToDateStatusOverallData)
output: 100%! (MISSING)MB/488 MB