2 Weeks From Cultivation, Humidity is 78% - Please Help Asap

Hi,

I have a 4 x 4 x 7 room with an outtake and an air conditioner blowing some cool air into the room. There are 4 girls in the room, and my light temp reads 78 degrees. However, my humidity is also 78%. They aren't looking good, i dont have access to a camera right now so i cant show pictures. Top leaves are curling and showing light brown fading to green.

HOW DO I GET MY HUMIDITY DOWN??

Thanks in advance.

dehumidifier.... if you have a portable a/c, it may have one

should i just lower my room temp to like 65?