291.18% is the change from 170 to 665
Calculation steps:
[( 665 - 170 ) ÷ 170] x 100 = 291.18%
Formula
Percentage change = [(665 - 170) / 170] x 100
Subtract the new number by the original number
665 - 170 = 495
495 ÷ 170 = 2.911764705882353
2.911764705882353 x 100 = 291.18%