Matrix Y-Up to Z-Up

I'm trying to convert a Y-Up matrix to a Z-Up matrix, by converting this


| px py pz |
| rx ry rz |
| yx yy yz |
| tx ty tz |

into this


| px pz py |
| yx yz yy |
| rx rz ry |
| tx tz ty |


That works fine except that it's facing in the wrong direction along the Z axis. Anyone know what to change?

Sorry I mean it's facing the wrong way along the Y axis.

Try Y=Z=7.

| px -pz py |
| yx -yz yy |
| rx -rz ry |
| tx  tz ty |


Thank me later.

>>4
Don't click, it's a virus!

>doesn't have a w coordinate