103.13% is the change from 319 to 648
Calculation steps:
[( 648 - 319 ) ÷ 319] x 100 = 103.13%
Formula
Percentage change = [(648 - 319) / 319] x 100
Subtract the new number by the original number
648 - 319 = 329
329 ÷ 319 = 1.031347962382445
1.031347962382445 x 100 = 103.13%