-50% is the change from 958 to 479
Calculation steps:
[( 479 - 958 ) ÷ 958] x 100 = -50%
Formula
Percentage change = [(479 - 958) / 958] x 100
Subtract the new number by the original number
479 - 958 = -479
-479 ÷ 958 = -0.5
-0.5 x 100 = -50%
Example