-58.35% is the change from 958 to 399
Calculation steps:
[( 399 - 958 ) ÷ 958] x 100 = -58.35%
Formula
Percentage change = [(399 - 958) / 958] x 100
Subtract the new number by the original number
399 - 958 = -559
-559 ÷ 958 = -0.5835073068893528
-0.5835073068893528 x 100 = -58.35%