Derja translation of 'مِئَوِيَّةْ'

مِئَوِيَّةْ
(ADJ)
percentage

What is the percentage of water in the globe? قَدَّاشْ النِّسْبَة المِئَوِيَّةْ لِلْمَاءْ فِالكُرَة الأَرْضِيَّة؟