-51.12% is the change from 669 to 327
Calculation steps:
[( 327 - 669 ) ÷ 669] x 100 = -51.12%
Formula
Percentage change = [(327 - 669) / 669] x 100
Subtract the new number by the original number
327 - 669 = -342
-342 ÷ 669 = -0.5112107623318386
-0.5112107623318386 x 100 = -51.12%