149.4% is the change from 249 to 621
Calculation steps:
[( 621 - 249 ) ÷ 249] x 100 = 149.4%
Formula
Percentage change = [(621 - 249) / 249] x 100
Subtract the new number by the original number
621 - 249 = 372
372 ÷ 249 = 1.4939759036144578
1.4939759036144578 x 100 = 149.4%