-3.04% is the change from 690 to 669
Calculation steps:
[( 669 - 690 ) ÷ 690] x 100 = -3.04%
Formula
Percentage change = [(669 - 690) / 690] x 100
Subtract the new number by the original number
669 - 690 = -21
-21 ÷ 690 = -0.030434782608695653
-0.030434782608695653 x 100 = -3.04%