Percentage-wise it looks pretty normal. $650 million out of $3.5 billion is a bit under 20%, which is common. I used to live in Santa Cruz, a much smaller town with a much smaller police department, but about the same percentage of city funding: police took $22 million out of $101 million (http://www.cityofsantacruz.com/Modules/ShowDocument.aspx?doc..., pp. 22-23).