1490% is the change from 40 to 636
Calculation steps:
[( 636 - 40 ) ÷ 40] x 100 = 1490%
Formula
Percentage change = [(636 - 40) / 40] x 100
Subtract the new number by the original number
636 - 40 = 596
596 ÷ 40 = 14.9
14.9 x 100 = 1490%
Example