Hi, this stopped working, possibly after a related change to org-table-eval-formula 2 days ago.
| a | b | percent of a in b |
|----+----+-------------------|
| 10 | 20 | #ERROR |
| 20 | 30 | #ERROR |
#+TBLFM: $3=($1/$2)*100;%.2f%%
A simpler format string like ;%.2f also fails.
It seems the regexp doesn't allow the leading %.
This leading % appears in the manual, so this syntax is correct.
| =$1+$2;%.2f= | Same, format result to two decimals |