Parents have been socking away tuition money with the state’s Prepaid Affordable College Tuition Plan since it was created in 1989, but a fund that had once grown to $899 million has dwindled to $463 million. Another victim of a tanking economy, the program raises funds by investing payments in the stock market. Added to that, is rising tuition costs and record student enrollment and PACT assets have taken a 48-percent hit.