-98.35% is the change from 667 to 11
Calculation steps:
[( 11 - 667 ) ÷ 667] x 100 = -98.35%
Formula
Percentage change = [(11 - 667) / 667] x 100
Subtract the new number by the original number
11 - 667 = -656
-656 ÷ 667 = -0.9835082458770614
-0.9835082458770614 x 100 = -98.35%