311.49% is the change from 148 to 609
Calculation steps:
[( 609 - 148 ) ÷ 148] x 100 = 311.49%
Formula
Percentage change = [(609 - 148) / 148] x 100
Subtract the new number by the original number
609 - 148 = 461
461 ÷ 148 = 3.114864864864865
3.114864864864865 x 100 = 311.49%