-98.52% is the change from 677 to 10
Calculation steps:
[( 10 - 677 ) ÷ 677] x 100 = -98.52%
Formula
Percentage change = [(10 - 677) / 677] x 100
Subtract the new number by the original number
10 - 677 = -667
-667 ÷ 677 = -0.9852289512555391
-0.9852289512555391 x 100 = -98.52%