-1.68% is the change from 654 to 643
Calculation steps:
[( 643 - 654 ) ÷ 654] x 100 = -1.68%
Formula
Percentage change = [(643 - 654) / 654] x 100
Subtract the new number by the original number
643 - 654 = -11
-11 ÷ 654 = -0.016819571865443424
-0.016819571865443424 x 100 = -1.68%