-26.83% is the change from 913 to 668
Calculation steps:
[( 668 - 913 ) ÷ 913] x 100 = -26.83%
Formula
Percentage change = [(668 - 913) / 913] x 100
Subtract the new number by the original number
668 - 913 = -245
-245 ÷ 913 = -0.2683461117196057
-0.2683461117196057 x 100 = -26.83%