-31.97% is the change from 660 to 449
Calculation steps:
[( 449 - 660 ) ÷ 660] x 100 = -31.97%
Formula
Percentage change = [(449 - 660) / 660] x 100
Subtract the new number by the original number
449 - 660 = -211
-211 ÷ 660 = -0.3196969696969697
-0.3196969696969697 x 100 = -31.97%