-26.59% is the change from 910 to 668
Calculation steps:
[( 668 - 910 ) ÷ 910] x 100 = -26.59%
Formula
Percentage change = [(668 - 910) / 910] x 100
Subtract the new number by the original number
668 - 910 = -242
-242 ÷ 910 = -0.26593406593406593
-0.26593406593406593 x 100 = -26.59%