According to the meaning of the question, the original three digits can be set to 10x+5.

The number on the original hundredth digit is moved to the tenth digit, and the number on the original tenth digit is moved to the single digit, so the new number is smaller than the original number 108.

5 moves to 100 and becomes 500.

Then:10x+5 =108+500+x.

9x=603

x=67

So the three digits are 675.