-36.92% is the change from 921 to 581
Calculation steps:
[( 581 - 921 ) ÷ 921] x 100 = -36.92%
Formula
Percentage change = [(581 - 921) / 921] x 100
Subtract the new number by the original number
581 - 921 = -340
-340 ÷ 921 = -0.3691639522258415
-0.3691639522258415 x 100 = -36.92%