I think the answer would be -14
664=60% off of original
percent means parts out of 100
60%=60/100=0.6
664=60% of original
'of' means multiply
translate
664=0.6 times originail
divide boh sides by 0.6
1106.666666=original
about $1106.67=original
or you could do ratio and proportion
664/60=x/100
answer is still $1106.67
What are you trying to do?
