https://www.calculatorsoup.com/calcu...calculator.php

Simple math made easy thanks to the web!

Going from 48 to 46 is a 4% difference.

Going from 32 to 30 is a 6.5% difference.

I found going from a 53t big ring to a 50t ring fit me alot better. This is because I'd find I was spinning a little too fast on one gear but upshifting had me putting out more torque at a lower cadence then I wanted. After the 15t cog your gear spacing is all about 11% apart up to the 34t.