-53.41% is the change from 837 to 390
Calculation steps:
[( 390 - 837 ) ÷ 837] x 100 = -53.41%
Formula
Percentage change = [(390 - 837) / 837] x 100
Subtract the new number by the original number
390 - 837 = -447
-447 ÷ 837 = -0.5340501792114696
-0.5340501792114696 x 100 = -53.41%