This another example of words being carried forward as men migrated but lost the quality and the knowledge of their ancestors' work on the Language and the science behind it.
cent - shat - 'cent' is for 'century' which means a base of 100. In sanskrit, 'shat' or 'zhat', depending on how you transliterate the Palatal Sibiliant, "sh" sound with tounge touching the palette.
per - prati - you can the corruption. In Sanskrit, "prati" is a very scientific prefix, which means, towards, and 'per' also means 'per 100' or 'towards 100 base'.