WH Collapse

For time collapse:

"Life cycle has not begun" - it will spawn in a minute or two.
"Probably won't last another day" - over 25% of its total time remaining.
"Reaching the end of its natural lifetime" - less than 25% of it's total time remaining. Collapse is imminent.

For mass collapse:

"Has not yet had its stability significantly disrupted" - over 45% of its total allowable mass left.
"Has had its stability reduced, but not to a critical degree yet" - less than 45% of its total allowable mass left.
"This wormhole has had its stability critically disrupted by the mass of numerous ships passing through and is on the verge of collapse." - less than 5% left.