-99.6% is the change from 743 to 3
Calculation steps:
[( 3 - 743 ) ÷ 743] x 100 = -99.6%
Formula
Percentage change = [(3 - 743) / 743] x 100
Subtract the new number by the original number
3 - 743 = -740
-740 ÷ 743 = -0.9959623149394348
-0.9959623149394348 x 100 = -99.6%