1647.5% is the change from 40 to 699
Calculation steps:
[( 699 - 40 ) ÷ 40] x 100 = 1647.5%
Formula
Percentage change = [(699 - 40) / 40] x 100
Subtract the new number by the original number
699 - 40 = 659
659 ÷ 40 = 16.475
16.475 x 100 = 1647.5%
Example