Look at the red line I've drawn, I think it defines the trend pretty well. Whist the price is above it and finds support on it, this up trend is intact. Notice however the the price ducks through it on the right. At this point I'd say the trend was broken. This can herald many scenarios, but one of them could be a new down trend. In summary, research and practice drawing trend lines to help you understand the structure of the market.
Thank You!