-42.15% is the change from 669 to 387
Calculation steps:
[( 387 - 669 ) ÷ 669] x 100 = -42.15%
Formula
Percentage change = [(387 - 669) / 669] x 100
Subtract the new number by the original number
387 - 669 = -282
-282 ÷ 669 = -0.42152466367713004
-0.42152466367713004 x 100 = -42.15%