-28.18% is the change from 958 to 688
Calculation steps:
[( 688 - 958 ) ÷ 958] x 100 = -28.18%
Formula
Percentage change = [(688 - 958) / 958] x 100
Subtract the new number by the original number
688 - 958 = -270
-270 ÷ 958 = -0.2818371607515658
-0.2818371607515658 x 100 = -28.18%