-27.34% is the change from 885 to 643
Calculation steps:
[( 643 - 885 ) ÷ 885] x 100 = -27.34%
Formula
Percentage change = [(643 - 885) / 885] x 100
Subtract the new number by the original number
643 - 885 = -242
-242 ÷ 885 = -0.2734463276836158
-0.2734463276836158 x 100 = -27.34%