-36.59% is the change from 921 to 584
Calculation steps:
[( 584 - 921 ) ÷ 921] x 100 = -36.59%
Formula
Percentage change = [(584 - 921) / 921] x 100
Subtract the new number by the original number
584 - 921 = -337
-337 ÷ 921 = -0.36590662323561346
-0.36590662323561346 x 100 = -36.59%