It means you already had the paycut, you need to have at least %4.2 rise + reimbursement to make even.
In high inflation countries you often get a revision every 2-3 months and you get a rise that is higher than the official inflation, as a result this solidifies the inflation and boosts the economy as everyone immediately buys whatever they can before it becomes more expensive. It's a vicious cycle.
Reminds me of stories from ex-Yu during high inflation periods (e.g. yearly doubling; not counting periods when there were runaway spikes of almost daily doubling) when people would go to remote areas where shops didn't yet get the updated prices from headquarters and basically walked away with a bunch of near free stuff.
In high inflation countries you often get a revision every 2-3 months and you get a rise that is higher than the official inflation, as a result this solidifies the inflation and boosts the economy as everyone immediately buys whatever they can before it becomes more expensive. It's a vicious cycle.