-99.86% is the change from 691 to 1
Calculation steps:
[( 1 - 691 ) ÷ 691] x 100 = -99.86%
Formula
Percentage change = [(1 - 691) / 691] x 100
Subtract the new number by the original number
1 - 691 = -690
-690 ÷ 691 = -0.9985528219971056
-0.9985528219971056 x 100 = -99.86%