-5.91% is the change from 643 to 605
Calculation steps:
[( 605 - 643 ) ÷ 643] x 100 = -5.91%
Formula
Percentage change = [(605 - 643) / 643] x 100
Subtract the new number by the original number
605 - 643 = -38
-38 ÷ 643 = -0.05909797822706065
-0.05909797822706065 x 100 = -5.91%