-60.88% is the change from 680 to 266
Calculation steps:
[( 266 - 680 ) ÷ 680] x 100 = -60.88%
Formula
Percentage change = [(266 - 680) / 680] x 100
Subtract the new number by the original number
266 - 680 = -414
-414 ÷ 680 = -0.6088235294117647
-0.6088235294117647 x 100 = -60.88%