612.24% is the change from 49 to 349
Calculation steps:
[( 349 - 49 ) ÷ 49] x 100 = 612.24%
Formula
Percentage change = [(349 - 49) / 49] x 100
Subtract the new number by the original number
349 - 49 = 300
300 ÷ 49 = 6.122448979591836
6.122448979591836 x 100 = 612.24%