-57.44% is the change from 921 to 392
Calculation steps:
[( 392 - 921 ) ÷ 921] x 100 = -57.44%
Formula
Percentage change = [(392 - 921) / 921] x 100
Subtract the new number by the original number
392 - 921 = -529
-529 ÷ 921 = -0.5743756786102063
-0.5743756786102063 x 100 = -57.44%