307.41% is the change from 135 to 550
Calculation steps:
[( 550 - 135 ) ÷ 135] x 100 = 307.41%
Formula
Percentage change = [(550 - 135) / 135] x 100
Subtract the new number by the original number
550 - 135 = 415
415 ÷ 135 = 3.074074074074074
3.074074074074074 x 100 = 307.41%