-99.38% is the change from 649 to 4
Calculation steps:
[( 4 - 649 ) ÷ 649] x 100 = -99.38%
Formula
Percentage change = [(4 - 649) / 649] x 100
Subtract the new number by the original number
4 - 649 = -645
-645 ÷ 649 = -0.9938366718027735
-0.9938366718027735 x 100 = -99.38%