-33.79% is the change from 660 to 437
Calculation steps:
[( 437 - 660 ) ÷ 660] x 100 = -33.79%
Formula
Percentage change = [(437 - 660) / 660] x 100
Subtract the new number by the original number
437 - 660 = -223
-223 ÷ 660 = -0.3378787878787879
-0.3378787878787879 x 100 = -33.79%