174.19% is the change from 124 to 340
Calculation steps:
[( 340 - 124 ) ÷ 124] x 100 = 174.19%
Formula
Percentage change = [(340 - 124) / 124] x 100
Subtract the new number by the original number
340 - 124 = 216
216 ÷ 124 = 1.7419354838709677
1.7419354838709677 x 100 = 174.19%