-8.4% is the change from 643 to 589
Calculation steps:
[( 589 - 643 ) ÷ 643] x 100 = -8.4%
Formula
Percentage change = [(589 - 643) / 643] x 100
Subtract the new number by the original number
589 - 643 = -54
-54 ÷ 643 = -0.08398133748055987
-0.08398133748055987 x 100 = -8.4%