-28.79% is the change from 903 to 643
Calculation steps:
[( 643 - 903 ) ÷ 903] x 100 = -28.79%
Formula
Percentage change = [(643 - 903) / 903] x 100
Subtract the new number by the original number
643 - 903 = -260
-260 ÷ 903 = -0.28792912513842744
-0.28792912513842744 x 100 = -28.79%