word conversion
 

If we assign number to letters:
- A - B - C - D - E - F - G - H - I - J - K - L - M
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 -11 -12 -13

- N - O - P - Q - R -- S - T- U - V - W - X - Y - Z
14 - 15- 16- 17-18 -19 -20- 21-22- 23 -24 - 25-26

Then

- H - A - R - D - W - O - R - K
8 1 18 4 23 15 18 11 = 98% Only

- K - N - O - W - L - E - D - G - E
11 14 15 23 12 5 4 7 5 = 96% Only

- L - O - B - B - Y - I - N - G
12 15 2 2 25 9 14 7 = 86% Only

- L - U - C - K
12 21 3 11 = 47% Only

and nothing can beat this one for success:

- A - T - T - I - T - U - D - E
1 20 20 9 20 21 4 5 = 100%

However:
- C - O - R - R - U - P - T - I - O - N
3 15 18 18 21 16 20 9 15 14 = 149%!!!!