| Event | Time | Meet | Date |
|---|---|---|---|
| 200m Butterfly | 4:47.69 | Nanaimo Ebbtides 44th Annual Master Swim Meet | 2025-11-22 |
| 25m Breaststroke | 20.29 | Nanaimo Ebbtides 44th Annual Master Swim Meet | 2025-11-22 |
| 25m Butterfly | 20.48 | Nanaimo Ebbtides 44th Annual Master Swim Meet | 2025-11-22 |
| 50m Breaststroke | 44.92 | Nanaimo Ebbtides 44th Annual Master Swim Meet | 2025-11-22 |
Chang, Johann's top personal bests include 200m Butterfly (4:47.69), 25m Breaststroke (20.29), 25m Butterfly (20.48), 50m Breaststroke (44.92).
Chang, Johann swims for Coast Swim Team.
Chang, Johann has competed in 2 meets.