per‧cent 1 AC ( also per cent British English ) / pəsent $ pər- / 形容词 , 副词

1 5 percent (5%)/10 percent (10%) etc equal to five, ten etc parts out of a total of 100 parts :

a 10% increase in house prices

a company with a 40 percent stake in the project

2 a/one hundred percent completely :

I agree with you a hundred percent.