-64.2% is the change from 958 to 343
Calculation steps:
[( 343 - 958 ) ÷ 958] x 100 = -64.2%
Formula
Percentage change = [(343 - 958) / 958] x 100
Subtract the new number by the original number
343 - 958 = -615
-615 ÷ 958 = -0.6419624217118998
-0.6419624217118998 x 100 = -64.2%