Meaning of PERCENTAGE in English

PERCENTAGE

noun

BAD : Only a small percentage of the windmills still works.

GOOD : Only a small percentage of the windmills still work.

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If the noun after percentage of is plural, the verb is plural: 'A high percentage of these school leavers have no qualifications.'

Longman Common Errors English vocabulary.      Английский словарь распространенных ошибок Longman.