Rate of deductions
9. The rate at which amounts are to be deducted from the debtor’s earnings under an attachment of earnings order, or any variation of it, is—
(a)where the earnings are payable weekly, the percentage of the debtor’s earnings specified in column 2 of Table A in Schedule 2 opposite the band in column 1 of that Table within which the net earnings payable on the pay-day fall;
(b)where the earnings are payable monthly, the percentage of the debtor’s earnings specified in column 2 of Table B in Schedule 2 opposite the band in column 1 of that Table within which the net earnings payable on the pay-day fall; or
(c)a higher weekly or monthly rate than that which would be payable under paragraph (a) or (b), as agreed between the appropriate authority and the debtor.