340% is the change from 170 to 748
Calculation steps:
[( 748 - 170 ) ÷ 170] x 100 = 340%
Formula
Percentage change = [(748 - 170) / 170] x 100
Subtract the new number by the original number
748 - 170 = 578
578 ÷ 170 = 3.4
3.4 x 100 = 340%
Example