321.9% is the change from 137 to 578
Calculation steps:
[( 578 - 137 ) ÷ 137] x 100 = 321.9%
Formula
Percentage change = [(578 - 137) / 137] x 100
Subtract the new number by the original number
578 - 137 = 441
441 ÷ 137 = 3.218978102189781
3.218978102189781 x 100 = 321.9%