3 H2O2-I + 2 KMnVIIO4 + 5 H2SO4 2 MnIVSO4SO4 + K2SO4 + 3 O20 + 8 H2O

This is an oxidation-reduction (redox) reaction:

2 MnVII + 6 e- 2 MnIV (reduction)

6 O-I - 6 e- 6 O0 (oxidation)

KMnO4 is an oxidizing agent, H2O2 is a reducing agent.