-36.52% is the change from 660 to 419
Calculation steps:
[( 419 - 660 ) ÷ 660] x 100 = -36.52%
Formula
Percentage change = [(419 - 660) / 660] x 100
Subtract the new number by the original number
419 - 660 = -241
-241 ÷ 660 = -0.36515151515151517
-0.36515151515151517 x 100 = -36.52%