-1.88% is the change from 691 to 678
Calculation steps:
[( 678 - 691 ) ÷ 691] x 100 = -1.88%
Formula
Percentage change = [(678 - 691) / 691] x 100
Subtract the new number by the original number
678 - 691 = -13
-13 ÷ 691 = -0.01881331403762663
-0.01881331403762663 x 100 = -1.88%