-27.65% is the change from 680 to 492
Calculation steps:
[( 492 - 680 ) ÷ 680] x 100 = -27.65%
Formula
Percentage change = [(492 - 680) / 680] x 100
Subtract the new number by the original number
492 - 680 = -188
-188 ÷ 680 = -0.27647058823529413
-0.27647058823529413 x 100 = -27.65%