1627.5% is the change from 40 to 691
Calculation steps:
[( 691 - 40 ) ÷ 40] x 100 = 1627.5%
Formula
Percentage change = [(691 - 40) / 40] x 100
Subtract the new number by the original number
691 - 40 = 651
651 ÷ 40 = 16.275
16.275 x 100 = 1627.5%
Example