Apply Strikethrough if values in another column are 100%?

Hello,

I have a to-do list. In column C I have listed my tasks and in column G I have a percentage for the tasks.

I would like to add a conditional formatting so that the task in column C gets stroke through if the value in column G for that row = 100%.

So if I change any value in any cell in the column G too 100%, I want it to apply the strike through formatting to the value of the cell in the same row in column C. E.g. I change Row 5, Column G to 100%, it should strike through Row 5, Column C.

I can construct the rule for one cell but not for the whole row!

I tried in conditional formatting: =$G1="100%" but it doesn't work!

Would vastly appreciate any help. 

Thank you!