In 1955 he was first selected for the New Zealand national rugby league team, touring Great Britain and France.
In 1958 Percy was part of the first ever Grand Final in the Auckland Rugby League competition, which Ponsonby won 16–7.
He also toured the South Island with Auckland and played for the Kiwis against Great Britain that year.
[3] In 1961 Percy joined the Balmain Tigers in the New South Wales Rugby League competition.
His son, Matthew Percy, represented Australia in the America's Cup and at the 1988 Summer Olympics.