164.12% is the change from 170 to 449
Calculation steps:
[( 449 - 170 ) ÷ 170] x 100 = 164.12%
Formula
Percentage change = [(449 - 170) / 170] x 100
Subtract the new number by the original number
449 - 170 = 279
279 ÷ 170 = 1.6411764705882352
1.6411764705882352 x 100 = 164.12%