-4.74% is the change from 675 to 643
Calculation steps:
[( 643 - 675 ) ÷ 675] x 100 = -4.74%
Formula
Percentage change = [(643 - 675) / 675] x 100
Subtract the new number by the original number
643 - 675 = -32
-32 ÷ 675 = -0.047407407407407405
-0.047407407407407405 x 100 = -4.74%