-98.55% is the change from 689 to 10
Calculation steps:
[( 10 - 689 ) ÷ 689] x 100 = -98.55%
Formula
Percentage change = [(10 - 689) / 689] x 100
Subtract the new number by the original number
10 - 689 = -679
-679 ÷ 689 = -0.9854862119013063
-0.9854862119013063 x 100 = -98.55%