Sheridan's Custom Electronics $($SCE$)$ sells and installs complete security, computer, audio, and video systems for homes. On newly constructed homes, it provides bids using time$-$and$-$material pricing. The following budgeted cost data are available:

$\backslash$table$[[,$Time Charges,$\backslash$table$[[$Material Loading$],[$Charges$]]],[$Technicians$\text{'}$ wages and benefits,$$129,950,],[$Parts manager's salary and benefits,,$$30,926$

Calculate the material loading percentage.