-98.38% is the change from 680 to 11
Calculation steps:
[( 11 - 680 ) ÷ 680] x 100 = -98.38%
Formula
Percentage change = [(11 - 680) / 680] x 100
Subtract the new number by the original number
11 - 680 = -669
-669 ÷ 680 = -0.9838235294117647
-0.9838235294117647 x 100 = -98.38%