1595% is the change from 40 to 678
Calculation steps:
[( 678 - 40 ) ÷ 40] x 100 = 1595%
Formula
Percentage change = [(678 - 40) / 40] x 100
Subtract the new number by the original number
678 - 40 = 638
638 ÷ 40 = 15.95
15.95 x 100 = 1595%
Example