This one comes from a real screenshot and it has caught out every Stake player I have shown it to, so it is worth a thread of its own.
A Bronze player wrote to me confused. His VIP page said he was 46.8% of the way to Silver. Silver needs $50,000 of lifetime wagering. He read the bar as "46.8% of $50,000", which is about $23,400, and he knew he had wagered more than that. Either the bar was broken or Stake was short-changing him.
Neither. The bar does not run from zero to the next level. It runs from the level you are on to the next one. Bronze is $10,000 and Silver is $50,000, so the bar for a Bronze player spans the $40,000 in between. 46.8% of $40,000 is $18,720, which put him at roughly $28,700 lifetime, about $21,300 short of Silver. He checked his own figures and it matched to the dollar.
The general rule, for any level:
lifetime wagered = current level threshold + (bar percentage x gap to next level)
Stake's thresholds, from their own VIP page: Bronze $10k, Silver $50k, Gold $100k, Platinum I $250k, and it keeps climbing from there. So the same 46.8% means $28,700 for a Bronze player, $73,400 for a Silver player, and $170,200 for a Gold player. The percentage on its own tells you almost nothing until you know which two thresholds it sits between.
Why it matters beyond curiosity: people decide whether to push for the next level based on that bar, and the money involved is real. A Bronze player who thinks he is $26,600 short when he is actually $21,300 short has misjudged by $5,000 of wagering, which on 4% slots is about $200 of expected loss either way. Read the bar properly before you make that call, and ideally do not make that call at all, because the level bonuses are a small fraction of what the wagering to reach them costs.
As far as I can find, Stake does not document this anywhere. If someone has seen it written down by Stake, I would like the link.