271.11% is the change from 135 to 501
Calculation steps:
[( 501 - 135 ) ÷ 135] x 100 = 271.11%
Formula
Percentage change = [(501 - 135) / 135] x 100
Subtract the new number by the original number
501 - 135 = 366
366 ÷ 135 = 2.7111111111111112
2.7111111111111112 x 100 = 271.11%