Stacked Bars *seem* like a good idea – we show 100%, we can fit more questions and data into a similar amount of space – advantages, right? Except that stacked bars are difficult for people to read. How well can you compare the values of the orange segments? Not so much.
If you are going to use stacked bars, make some helpful formatting tweaks, like smarter color coding and an order from greatest to least.
A lot of this comes down to simplification and reduction of possibilities. Read the whole thing.