-30.63% is the change from 924 to 641
Calculation steps:
[( 641 - 924 ) ÷ 924] x 100 = -30.63%
Formula
Percentage change = [(641 - 924) / 924] x 100
Subtract the new number by the original number
641 - 924 = -283
-283 ÷ 924 = -0.30627705627705626
-0.30627705627705626 x 100 = -30.63%