-64.3% is the change from 958 to 342
Calculation steps:
[( 342 - 958 ) ÷ 958] x 100 = -64.3%
Formula
Percentage change = [(342 - 958) / 958] x 100
Subtract the new number by the original number
342 - 958 = -616
-616 ÷ 958 = -0.6430062630480167
-0.6430062630480167 x 100 = -64.3%