2 KMnVIIO4 + 5 (CIIIOOH)2 + 3 H2SO4 K2SO4 + 2 MnIISO4 + 8 H2O + 10 CIVO2

This is an oxidation-reduction (redox) reaction:

2 MnVII + 10 e- 2 MnII (reduction)

10 CIII - 10 e- 10 CIV (oxidation)

Change the oxidation states