-29.03% is the change from 906 to 643
Calculation steps:
[( 643 - 906 ) ÷ 906] x 100 = -29.03%
Formula
Percentage change = [(643 - 906) / 906] x 100
Subtract the new number by the original number
643 - 906 = -263
-263 ÷ 906 = -0.2902869757174393
-0.2902869757174393 x 100 = -29.03%