How do you translate a percent into a proportion?

Answer:
Take the amount shown by the percentage as the left number in the proportion. 100 minus that amount is the right number in the proportion. This can then be simplified by identifying any common factors in the two numbers. For instance 40% would be written down as 40:60. This could then be simplified to 2:3.
First answer by Phelikx. Last edit by Phelikx. Contributor trust: 32 [recommend contributor recommended]. Question popularity: 1 [recommend question].