Can someone check this for me?

[Nikki111]

4. Pete Smith found in his attic a Woody Woodpecker watch in its original box. It had a price tag on it for $4.50. The watch was made in 1949. Pete brought the watch to an antiques dealer and sold it for $35. What was the percent of increase? (3 pts)
35-4.50= 30.50
30.50/4.50=6.78% increase

 

[arthur ohlsten]

original cost $4.50
sell price $35

35-4.5=30.5

ratio increase 30.5/4.5
ratio increase = 6.777
% increase = ratio increase times 100%

% increase = 677.8%

you didn't multiply by 100%

Arthur