-65.59% is the change from 680 to 234
Calculation steps:
[( 234 - 680 ) ÷ 680] x 100 = -65.59%
Formula
Percentage change = [(234 - 680) / 680] x 100
Subtract the new number by the original number
234 - 680 = -446
-446 ÷ 680 = -0.6558823529411765
-0.6558823529411765 x 100 = -65.59%