- I have changed my watch from forerunner 245 to 255. I have noticed that active calories from steps are much lower vs 245. For example when I did 11k steps on 245 it counted 535 active calories (+2230 pasive). Now on 255 when I have walked 11k steps it is showing 184 active calories (+2221 pasive cal.) Is this normal? Do I'm missing some settings? The difference is not so small to me.