-51.87% is the change from 669 to 322
Calculation steps:
[( 322 - 669 ) ÷ 669] x 100 = -51.87%
Formula
Percentage change = [(322 - 669) / 669] x 100
Subtract the new number by the original number
322 - 669 = -347
-347 ÷ 669 = -0.5186846038863976
-0.5186846038863976 x 100 = -51.87%