-57.64% is the change from 942 to 399
Calculation steps:
[( 399 - 942 ) ÷ 942] x 100 = -57.64%
Formula
Percentage change = [(399 - 942) / 942] x 100
Subtract the new number by the original number
399 - 942 = -543
-543 ÷ 942 = -0.5764331210191083
-0.5764331210191083 x 100 = -57.64%