-3.48% is the change from 689 to 665
Calculation steps:
[( 665 - 689 ) ÷ 689] x 100 = -3.48%
Formula
Percentage change = [(665 - 689) / 689] x 100
Subtract the new number by the original number
665 - 689 = -24
-24 ÷ 689 = -0.03483309143686502
-0.03483309143686502 x 100 = -3.48%