1202.04% is the change from 49 to 638
Calculation steps:
[( 638 - 49 ) ÷ 49] x 100 = 1202.04%
Formula
Percentage change = [(638 - 49) / 49] x 100
Subtract the new number by the original number
638 - 49 = 589
589 ÷ 49 = 12.020408163265307
12.020408163265307 x 100 = 1202.04%