4471.43% is the change from 14 to 640
Calculation steps:
[( 640 - 14 ) ÷ 14] x 100 = 4471.43%
Formula
Percentage change = [(640 - 14) / 14] x 100
Subtract the new number by the original number
640 - 14 = 626
626 ÷ 14 = 44.714285714285715
44.714285714285715 x 100 = 4471.43%