-99.25% is the change from 663 to 5
Calculation steps:
[( 5 - 663 ) ÷ 663] x 100 = -99.25%
Formula
Percentage change = [(5 - 663) / 663] x 100
Subtract the new number by the original number
5 - 663 = -658
-658 ÷ 663 = -0.9924585218702866
-0.9924585218702866 x 100 = -99.25%