Sorry about that!-- I took 169 and divided it by 69 and got 2.38. Since that’s not possible in knitting, I’m going by either side of that number, in other words, 2 and 3. For future reference, take the number of sts you have and divide it by the number of sts you’re taking away in your decrease. The resulting number is how many sts you need to knit between decreases BUT because when you decrease you knit 2 sts together, don’t forget to take that into account. So if you have to decrease every 4th sts, you actually need to knit together every 3rd and 4th st. Hope that makes sense.
Conversely, if you have to increase, take the number of sts you have and divide it by the number of sts you have to add on. The resulting number is how many sts you need to knit between increases, and you don’t have to worry about the knitting 2 tog. issue with decreases.
For the quarters, 96 is 4 times 24, but you needed 25, so I just lopped off 1 st from 1 quarter, or 24 + 24 + 24 + 23. Depending on what you’re knitting and how many sts you have and how many you have to increase or decrease, you might want to mark off thirds or tenths, or whatever. It’s just a way to keep track as you go along and not get through most of the row or round and find out you all of a sudden have to decrease 10 sts and it will look uneven.