-30.26% is the change from 922 to 643
Calculation steps:
[( 643 - 922 ) ÷ 922] x 100 = -30.26%
Formula
Percentage change = [(643 - 922) / 922] x 100
Subtract the new number by the original number
643 - 922 = -279
-279 ÷ 922 = -0.30260303687635576
-0.30260303687635576 x 100 = -30.26%