-98.12% is the change from 691 to 13
Calculation steps:
[( 13 - 691 ) ÷ 691] x 100 = -98.12%
Formula
Percentage change = [(13 - 691) / 691] x 100
Subtract the new number by the original number
13 - 691 = -678
-678 ÷ 691 = -0.9811866859623734
-0.9811866859623734 x 100 = -98.12%