274.81% is the change from 135 to 506
Calculation steps:
[( 506 - 135 ) ÷ 135] x 100 = 274.81%
Formula
Percentage change = [(506 - 135) / 135] x 100
Subtract the new number by the original number
506 - 135 = 371
371 ÷ 135 = 2.748148148148148
2.748148148148148 x 100 = 274.81%