As asked, the answer is 1700% However, the question may be more properly interpreted as what percentage is 17 if the ratio is 17:1 In this case it means 17 parts out of every 18 - which is a percentage of 94.44%

The number of hundreds in a percentage becomes the integer part of the mixed number, and the last the remainder of the number, when divided by 100, becomes the fractional part. Thus, given 1234, the number of hundreds is 12. So the mixed number is 12 34/100 which can be simplified to 12 17/50.