343.7% is the change from 135 to 599
Calculation steps:
[( 599 - 135 ) ÷ 135] x 100 = 343.7%
Formula
Percentage change = [(599 - 135) / 135] x 100
Subtract the new number by the original number
599 - 135 = 464
464 ÷ 135 = 3.437037037037037
3.437037037037037 x 100 = 343.7%