238.31% is the change from 154 to 521
Calculation steps:
[( 521 - 154 ) ÷ 154] x 100 = 238.31%
Formula
Percentage change = [(521 - 154) / 154] x 100
Subtract the new number by the original number
521 - 154 = 367
367 ÷ 154 = 2.383116883116883
2.383116883116883 x 100 = 238.31%