I've had a search as I didn't know myself and I came upon a couple of things, although they concern differing periods. You can judge the reliability of these yourself, they are sourced so I assume if you do some digging you can find the raw data.

Firstly, this I found at the Texas Digital Library, and it states that in Germany "A conservative estimate of literacy rates at the beginning of the sixteenth century include a thirty percent literacy rate in urban areas, but only a five-percent rate of literacy overall (Lindberg)".

Next, I found this in the collection at the Institute of Education Sciences, although it isn't peer-reviewed so again, judge it yourself. The author states "Graff states, for example, that the literacy rate for London males in the fifteenth century was 'around 40%' (1991, p. 97)." If you look further into the source in this, at Graff's "The Legacies of Literacy", he comments on pg. 143 that "it remains doubtful that the literacy rate for Poland exceeded 10%". Graff also mentions on pg. 163 that during the sixteenth century, the rate of literacy in England was "no higher than 40%". In Italy, Graff states on pg. 77 that during the late thirteenth and early fourteenth centuries "the rate of adult literacy was probably in the range of 25-35%".

I hope this helps, took a bit of a search. To put the above in a more readable form:

England: 40% (Late 1400s - early 1500s)

Poland: 10% (1500s)

Italy: 25-35% (Late 1200s - early 1300s)

Germany: 5% overall, 30% urban areas (Early 1500s)