"Key Performance Indicators (KPI) are financial and non-financial metrics used to help an organisation define and measure progress toward organisational goals - The act of monitoring KPIs in real-time is known as business activity monitoring (BAM)."
Usually applied to individuals, but why not one that can be applied to the organisation proper?
A friend of mine (suspect he'd like to remain anonymous) in a large organisation told me the other day about his own little experimental KPI, the best ever for unadulterated measurement of real organisational effectiveness:
"The number of hours, days or weeks one can do absolutely nothing before being noticed".'Nuff said.