-3.47% is the change from 691 to 667
Calculation steps:
[( 667 - 691 ) ÷ 691] x 100 = -3.47%
Formula
Percentage change = [(667 - 691) / 691] x 100
Subtract the new number by the original number
667 - 691 = -24
-24 ÷ 691 = -0.03473227206946455
-0.03473227206946455 x 100 = -3.47%