-28.25% is the change from 931 to 668
Calculation steps:
[( 668 - 931 ) ÷ 931] x 100 = -28.25%
Formula
Percentage change = [(668 - 931) / 931] x 100
Subtract the new number by the original number
668 - 931 = -263
-263 ÷ 931 = -0.2824919441460795
-0.2824919441460795 x 100 = -28.25%