-99.85% is the change from 681 to 1
Calculation steps:
[( 1 - 681 ) ÷ 681] x 100 = -99.85%
Formula
Percentage change = [(1 - 681) / 681] x 100
Subtract the new number by the original number
1 - 681 = -680
-680 ÷ 681 = -0.9985315712187959
-0.9985315712187959 x 100 = -99.85%