Needham Industries provides the following information relating to its land, buildings and equipment: $ millions 2021 2020 Land $1,000 $ 600 Buildings 2,000 2,000 Machinery and equipment 30.000 27.000 $33,000 $29,600 Total accumulated depreciation $22.000 $19,500 Reported depreciation expense for 2021 is $2,500 million. Calculate the plant assets' percent depreciated for 2021 (enter as a decimal rounding to the nearest whole percent, 0.9., enter 23.6% an 0.24)