102.94% is the change from 170 to 345
Calculation steps:
[( 345 - 170 ) ÷ 170] x 100 = 102.94%
Formula
Percentage change = [(345 - 170) / 170] x 100
Subtract the new number by the original number
345 - 170 = 175
175 ÷ 170 = 1.0294117647058822
1.0294117647058822 x 100 = 102.94%