-57.56% is the change from 919 to 390
Calculation steps:
[( 390 - 919 ) ÷ 919] x 100 = -57.56%
Formula
Percentage change = [(390 - 919) / 919] x 100
Subtract the new number by the original number
390 - 919 = -529
-529 ÷ 919 = -0.5756256800870512
-0.5756256800870512 x 100 = -57.56%