-13.69% is the change from 643 to 555
Calculation steps:
[( 555 - 643 ) ÷ 643] x 100 = -13.69%
Formula
Percentage change = [(555 - 643) / 643] x 100
Subtract the new number by the original number
555 - 643 = -88
-88 ÷ 643 = -0.1368584758942457
-0.1368584758942457 x 100 = -13.69%