-48.43% is the change from 669 to 345
Calculation steps:
[( 345 - 669 ) ÷ 669] x 100 = -48.43%
Formula
Percentage change = [(345 - 669) / 669] x 100
Subtract the new number by the original number
345 - 669 = -324
-324 ÷ 669 = -0.484304932735426
-0.484304932735426 x 100 = -48.43%