how potassium permanganate is turned to potassium dioxide

Is the question "how potassium permanganate is turned to manganese dioxide?"
In the presence of light, KMnO4 solution decomposes to give MnO2(s) and oxygen.
2KMnO4(aq) → K2MnO4(aq) + 2MnO2 + O2
By adding alkaline to KMnO4 solution, MnO2(s) will form as precipiate.

Potassium permanganate = KMnO4