173.6% is the change from 125 to 342
Calculation steps:
[( 342 - 125 ) ÷ 125] x 100 = 173.6%
Formula
Percentage change = [(342 - 125) / 125] x 100
Subtract the new number by the original number
342 - 125 = 217
217 ÷ 125 = 1.736
1.736 x 100 = 173.6%
Example