Wrong, here is a cite : "
90%
During the Battle of Britain, the interception rates of the Royal Air Force (RAF) were over 90%123.
This was due to the Dowding system, which allowed the RAF to maintain such high rates of successful interceptions. In contrast, during the preceding Battle of France, the RAF's interception rates were typically around 30%" "The Dowding system is considered key to the success of the RAF against the German air force (
Luftwaffe) during the Battle of Britain. The combination of early detection and rapid dissemination of that information acted as a
force multiplier, allowing the fighter force to be used at extremely high rates of effectiveness. In the pre-war period, interception rates of 30% to 50% were considered excellent; that meant that over half the
sorties sent out would return without having encountered the enemy. During the Battle, average rates were around 90%, and several raids were met with 100% success rates.<a href="
Dowding system - Wikipedia"><span>[</span>3<span>]</span></a> Lacking their own direction system, Luftwaffe fighters had little information on the location of their RAF counterparts, and often returned to base having never seen them. When they did, the RAF fighters were almost always in an advantageous position." That is from Wikki, but if you look there are numerous articles that agree with those numbers.