Sunland and Associates, a consulting service, recently received a bill for repairs on its computer system totaling $2.146. Sunland thinks it may have been overcharged and is trying to recreate the components of the bill. She knows the hourly rate is $74 and 15 hours of labor was charged. She also knows $658 of parts were replaced. Compute the material loading charge percentage the repair service used. (Round answer to O decimal places, e.g. 20%.) Material loading charge percentage %