360% is the change from 135 to 621
Calculation steps:
[( 621 - 135 ) ÷ 135] x 100 = 360%
Formula
Percentage change = [(621 - 135) / 135] x 100
Subtract the new number by the original number
621 - 135 = 486
486 ÷ 135 = 3.6
3.6 x 100 = 360%
Example