-31.35% is the change from 973 to 668
Calculation steps:
[( 668 - 973 ) ÷ 973] x 100 = -31.35%
Formula
Percentage change = [(668 - 973) / 973] x 100
Subtract the new number by the original number
668 - 973 = -305
-305 ÷ 973 = -0.31346351490236385
-0.31346351490236385 x 100 = -31.35%