-30.56% is the change from 926 to 643
Calculation steps:
[( 643 - 926 ) ÷ 926] x 100 = -30.56%
Formula
Percentage change = [(643 - 926) / 926] x 100
Subtract the new number by the original number
643 - 926 = -283
-283 ÷ 926 = -0.30561555075593955
-0.30561555075593955 x 100 = -30.56%