# really stupid math question

**URL:** <https://boards.straightdope.com/t/really-stupid-math-question/56629>\
**Category:** Factual Questions\
**Created:** [March 3, 2001, 4:27pm UTC](https://boards.straightdope.com/t/really-stupid-math-question/56629 "2001-03-03T16:27:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![J\_s\_Friend](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@J\_s\_Friend](https://boards.straightdope.com/u/J_s_Friend)\
**Post date:** [March 3, 2001, 4:27pm UTC](https://boards.straightdope.com/t/really-stupid-math-question/56629/1 "2001-03-03T16:27:14Z")

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I have a really stupid math question that is just bugging me to death. How do you figure out what percentage one number is of another? For example 170 is what percent of 190. I haven’t done this since high school and now that I need it I wish I had paid better attention. A simple calculator answer will do. Thanks

(Boy do I feel like an idiot)

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**Author:** ![Ring](https://avatars.discourse-cdn.com/v4/letter/r/6a8cbe/32.png) [@Ring](https://boards.straightdope.com/u/Ring)\
**Post date:** [March 3, 2001, 4:29pm UTC](https://boards.straightdope.com/t/really-stupid-math-question/56629/2 "2001-03-03T16:29:35Z")

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(170/190)\*100 = 89.47%

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**Author:** ![J\_s\_Friend](https://avatars.discourse-cdn.com/v4/letter/j/7ab992/32.png) [@J\_s\_Friend](https://boards.straightdope.com/u/J_s_Friend)\
**Post date:** [March 3, 2001, 4:33pm UTC](https://boards.straightdope.com/t/really-stupid-math-question/56629/3 "2001-03-03T16:33:25Z")

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Duh, Thanks