Like Touney said add more muscle groups - you need a total body workout routine, so adding some squats and a core exercise would help you lose fat way quicker.
I would say you need to change things up every WORKOUT, not every few weeks or months. You'd be suprised at how quickly your body will adapt.
Repeating the exact same workout twice is a weight loss sin!
Every workout aim for more repetitions, more weight, a harder variation of the exercise, or rest for less seconds in between.
(but only ever increase ONE of these things at a time or you'll overload your body!)
Progressing your workouts like this is the KEY to successful fat loss, and its what so many people miss.
As for jogging, swtich it up to intervals where you go faster / harder for up to 30 secs and then back off at an easy pace for 60 seconds.
Jogging at a steady pace is NOT effective for weight loss, whereas intervals and bodyweight circuits are proven by studies to burn up to 9 times more fat.
Jogging is for marathon runners!
Hoep this helps, all the best