236.13% is the change from 155 to 521
Calculation steps:
[( 521 - 155 ) ÷ 155] x 100 = 236.13%
Formula
Percentage change = [(521 - 155) / 155] x 100
Subtract the new number by the original number
521 - 155 = 366
366 ÷ 155 = 2.361290322580645
2.361290322580645 x 100 = 236.13%