249.66% is the change from 149 to 521
Calculation steps:
[( 521 - 149 ) ÷ 149] x 100 = 249.66%
Formula
Percentage change = [(521 - 149) / 149] x 100
Subtract the new number by the original number
521 - 149 = 372
372 ÷ 149 = 2.4966442953020134
2.4966442953020134 x 100 = 249.66%