Well, they look to have been professionally grown - they are bags commonly used in the nursery industry - and I see from your page that you are in the Philippines. Were you told ANYTHING about the plants? The one on the left - my first thought was Duranta repens "Sheena's Gold" but I think we need some close-ups of the leaves, esp the one on the right, plus whatever clues you can provide about where you acquired them and what you already may know.

Looks a lot like a Pseuderanthemum atropurpureum "Tricolor" or other similar tropical shrub sold as a houseplant - I see them all the time in the grocery store and places like Home Depot and have owned several over the years both at home and in the office. Moving it to the balcony was smart - it needs at least partial if not full sun. The only way to keep it healthy indoors is in a very bright window or with a grow light unless you are fortunate to have a balcony. It needs rich soil, well drained, and to be fed regularly and watered generously. Give it some food and water and it should perk up. Can't tell for sure from the photo but it could probably stand being moved to a larger pot. I've usually fed these with dilute azalea food alternating with dilute houseplant food although palm food would work as well - it likes acidic soil. It doesn't like to be in mud but don't let it dry out completely either. These plants are prone to spider mites and scale indoors if they are neglected or not watered enough - the insects tend to attack struggling plants like this one. My usual way to deal with this is to spray with a solution of water with some canola and a bit of clear soap (like 7th Generation or clear Joy or Palmolive). If you see hints of anything suggesting insects (small spider webs for example), take it out into the driveway and give it a brisk spray with a hose first and then spray with soap and oil solution. If it likes its location and it's well cared for, and can get 4 feet tall or taller. I had one get to nearly 5 feet in front of a floor to ceiling window in an office..... that thing just loved that spot. You do need to rotate the pot every few weeks though if growing in a window,

Since it is a herbaceous perennial it doesn't actually need any pruning. Everything which grows in a single year will die to the ground in the winter. All it needs is the dead stems cutting down to the ground if that's what you want to do. There is no permanent framework to control.

My first thought was Perovskia but Linaria could be candidate. Here is a link that might be useful: