While the 'Format' option for numbers provides International Currency Standards - US, UK, German, etc., the Format for Percentages available is only US.
While US format looks like 75.5% , the equivalent German format is 75,5% which is not available unless I go for a German installation I believe.
I face a similar limitation while wanting to use the Thousands Unit (K) in a German format number or currency.
While US format looks like 7,000K, the equivalent German format is 7.000K - This is not available.
I wish these international formats are made available in the future releases..