292.94% is the change from 170 to 668
Calculation steps:
[( 668 - 170 ) ÷ 170] x 100 = 292.94%
Formula
Percentage change = [(668 - 170) / 170] x 100
Subtract the new number by the original number
668 - 170 = 498
498 ÷ 170 = 2.929411764705882
2.929411764705882 x 100 = 292.94%