-98.36% is the change from 669 to 11
Calculation steps:
[( 11 - 669 ) ÷ 669] x 100 = -98.36%
Formula
Percentage change = [(11 - 669) / 669] x 100
Subtract the new number by the original number
11 - 669 = -658
-658 ÷ 669 = -0.9835575485799701
-0.9835575485799701 x 100 = -98.36%