183.33% is the change from 120 to 340
Calculation steps:
[( 340 - 120 ) ÷ 120] x 100 = 183.33%
Formula
Percentage change = [(340 - 120) / 120] x 100
Subtract the new number by the original number
340 - 120 = 220
220 ÷ 120 = 1.8333333333333333
1.8333333333333333 x 100 = 183.33%