-57.22% is the change from 921 to 394
Calculation steps:
[( 394 - 921 ) ÷ 921] x 100 = -57.22%
Formula
Percentage change = [(394 - 921) / 921] x 100
Subtract the new number by the original number
394 - 921 = -527
-527 ÷ 921 = -0.5722041259500543
-0.5722041259500543 x 100 = -57.22%