-51.42% is the change from 669 to 325
Calculation steps:
[( 325 - 669 ) ÷ 669] x 100 = -51.42%
Formula
Percentage change = [(325 - 669) / 669] x 100
Subtract the new number by the original number
325 - 669 = -344
-344 ÷ 669 = -0.5142002989536621
-0.5142002989536621 x 100 = -51.42%