Ok Terry
I was probably to picky this time.....but to answer your question would take a lot of time counting, and in some cases estimating some factors...
However, no country involved in the War actually reported their a/c losses. In the best, they partly reported their losses of personal.
For the German we knew the exact number of killed and wounded pilots due enemy flyers. From that we can at the moment only estimate how many of these who actually led to a destroyed a/c....
I also dont remember the British amount of OOC, but I do have the total of French equivalente.
But Graeme perhaps said that the amount of British OOC was around 5000 ??
My guess is that less than 100 of these resulted in the destruction of the German a/c......so 2 %...
If you choice that the definition for a British victory(its a free choice)should include a German pilot which was put out of action for a long time or the reminder of the War you ought to raisen the percent to 4 % or higher......you can proceed this way to receive further heights...
So here you got some wild guesses
8)
Gunnar