-99.7% is the change from 659 to 2
Calculation steps:
[( 2 - 659 ) ÷ 659] x 100 = -99.7%
Formula
Percentage change = [(2 - 659) / 659] x 100
Subtract the new number by the original number
2 - 659 = -657
-657 ÷ 659 = -0.9969650986342944
-0.9969650986342944 x 100 = -99.7%