-6.73% is the change from 669 to 624
Calculation steps:
[( 624 - 669 ) ÷ 669] x 100 = -6.73%
Formula
Percentage change = [(624 - 669) / 669] x 100
Subtract the new number by the original number
624 - 669 = -45
-45 ÷ 669 = -0.06726457399103139
-0.06726457399103139 x 100 = -6.73%