-30.06% is the change from 958 to 670
Calculation steps:
[( 670 - 958 ) ÷ 958] x 100 = -30.06%
Formula
Percentage change = [(670 - 958) / 958] x 100
Subtract the new number by the original number
670 - 958 = -288
-288 ÷ 958 = -0.30062630480167013
-0.30062630480167013 x 100 = -30.06%