-99.09% is the change from 659 to 6
Calculation steps:
[( 6 - 659 ) ÷ 659] x 100 = -99.09%
Formula
Percentage change = [(6 - 659) / 659] x 100
Subtract the new number by the original number
6 - 659 = -653
-653 ÷ 659 = -0.9908952959028832
-0.9908952959028832 x 100 = -99.09%