60% of my bonus up in smoke... Merry Christmas

I was supposed to get a bonus of £250 for the end of the year. Which after taxes, NI, student loans etc goes down to £100... I lost 60% of my bonus before even seeing it. I'm the one that done the work and knocked my pan in, but I got less than half of that... Not even the lions share of my own bonus. What a joke.

Edit: For everyone thinking I am the next Elon Musk, alas, I make £50k, which is good money I am aware, but not the figure I quite had in mind for a 60% deduction.