-31.42% is the change from 974 to 668
Calculation steps:
[( 668 - 974 ) ÷ 974] x 100 = -31.42%
Formula
Percentage change = [(668 - 974) / 974] x 100
Subtract the new number by the original number
668 - 974 = -306
-306 ÷ 974 = -0.3141683778234086
-0.3141683778234086 x 100 = -31.42%