When you export acquisition data to Excel, and there are negative (minus) amounts in budget, Koha adds wrong symbol (') before the amount. It's not possible to count the rows that include this symbol.
This comes from bug 37727, minus sign is considered as unsafe character and we add ' mark before them. Could we handle minus sign separately to determine if it's used in harmful context e.g. if it's added between strings or end of string or something like that?