-4.49% is the change from 691 to 660
Calculation steps:
[( 660 - 691 ) ÷ 691] x 100 = -4.49%
Formula
Percentage change = [(660 - 691) / 691] x 100
Subtract the new number by the original number
660 - 691 = -31
-31 ÷ 691 = -0.04486251808972504
-0.04486251808972504 x 100 = -4.49%