A ratio is a comparison of 2 numbers. A percentage is also a comparison of two numbers... some number and 100. Since they are both the comparison of 2 numbers, we can write the percentage as a fraction and then reduce and that will be the ratio.
22% = 22/100 = 11/50 = 11:50
24% = 24/100 = 12/50 = 6/25 = 6:25
