user: Question: what is the total win % of manager viktor prokopenko, when he lost fewer than 2?
Columns: ['Manager', 'Ukraine career', 'Played', 'Drawn', 'Lost', 'Win %']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Viktor Prokopenko', '1992', 3.0, 1.0, 2.0, 0.0]
SQL:

assistant: SELECT SUM("Win %") FROM "Table" WHERE "Manager" = 'viktor prokopenko' AND "Lost" < 2.0;