Before this commit the % symbol was part of the input. We could write a
value with the % symbol to divide the value by 100 (50% = 0.5, 50 = 50)
This commit removes the % symbol from the input and adds it in a span
after the input so we do not need to write the % symbol anymore.
The value from the input will be saved as $value / 100 in database.
task-2065078
closesodoo/odoo#43995
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>