-17.33% is the change from 808 to 668
Calculation steps:
[( 668 - 808 ) ÷ 808] x 100 = -17.33%
Formula
Percentage change = [(668 - 808) / 808] x 100
Subtract the new number by the original number
668 - 808 = -140
-140 ÷ 808 = -0.17326732673267325
-0.17326732673267325 x 100 = -17.33%