-32.99% is the change from 670 to 449
Calculation steps:
[( 449 - 670 ) ÷ 670] x 100 = -32.99%
Formula
Percentage change = [(449 - 670) / 670] x 100
Subtract the new number by the original number
449 - 670 = -221
-221 ÷ 670 = -0.32985074626865674
-0.32985074626865674 x 100 = -32.99%