-5.99% is the change from 684 to 643
Calculation steps:
[( 643 - 684 ) ÷ 684] x 100 = -5.99%
Formula
Percentage change = [(643 - 684) / 684] x 100
Subtract the new number by the original number
643 - 684 = -41
-41 ÷ 684 = -0.059941520467836254
-0.059941520467836254 x 100 = -5.99%