Summary
The Thai translation for “percent” is 
เปอร์เซ็นต์. The Thai, 
เปอร์เซ็นต์, can be broken down into 11 parts:
"vowel eh (long version)" (เ-), 
"The 27th consonant of the Thai alphabet" (ป), 
"The 43rd consonant of the Thai alphabet" (อ), 
"The 35th consonant of the Thai alphabet" (ร), 
"symbol for silent letter" (-์ การันต์), 
"vowel eh (long version)" (เ-), 
"The 11th consonant of the Thai alphabet" (ซ), 
"vowel mai tai khu" (-็), 
"The 25th consonant of the Thai alphabet" (น), 
"The 21st consonant of the Thai alphabet" (ต) and 
"symbol for silent letter" (-์ การันต์).
Examples of "percent" in use
There are 4 examples of the Thai word for "percent" being used: