393.33% is the change from 135 to 666
Calculation steps:
[( 666 - 135 ) ÷ 135] x 100 = 393.33%
Formula
Percentage change = [(666 - 135) / 135] x 100
Subtract the new number by the original number
666 - 135 = 531
531 ÷ 135 = 3.933333333333333
3.933333333333333 x 100 = 393.33%