YOU SAID:

My friend has 1% brain cells

INTO JAPANESE

私の友人の脳細胞は 1% です

BACK INTO ENGLISH

my friend has 1% brain cells

INTO JAPANESE

私の友達の脳細胞は1%

BACK INTO ENGLISH

my friend's brain cells are 1%

INTO JAPANESE

友達の脳細胞は1%

BACK INTO ENGLISH

1% of your friend's brain cells

INTO JAPANESE

友達の脳細胞の1%

BACK INTO ENGLISH

1% of your friend's brain cells