290.59% is the change from 170 to 664
Calculation steps:
[( 664 - 170 ) ÷ 170] x 100 = 290.59%
Formula
Percentage change = [(664 - 170) / 170] x 100
Subtract the new number by the original number
664 - 170 = 494
494 ÷ 170 = 2.9058823529411764
2.9058823529411764 x 100 = 290.59%