252.03% is the change from 148 to 521
Calculation steps:
[( 521 - 148 ) ÷ 148] x 100 = 252.03%
Formula
Percentage change = [(521 - 148) / 148] x 100
Subtract the new number by the original number
521 - 148 = 373
373 ÷ 148 = 2.52027027027027
2.52027027027027 x 100 = 252.03%