-99.09% is the change from 658 to 6
Calculation steps:
[( 6 - 658 ) ÷ 658] x 100 = -99.09%
Formula
Percentage change = [(6 - 658) / 658] x 100
Subtract the new number by the original number
6 - 658 = -652
-652 ÷ 658 = -0.9908814589665653
-0.9908814589665653 x 100 = -99.09%