-27.58% is the change from 950 to 688
Calculation steps:
[( 688 - 950 ) ÷ 950] x 100 = -27.58%
Formula
Percentage change = [(688 - 950) / 950] x 100
Subtract the new number by the original number
688 - 950 = -262
-262 ÷ 950 = -0.27578947368421053
-0.27578947368421053 x 100 = -27.58%