19.77% is the change from 531 to 636
Calculation steps:
[( 636 - 531 ) ÷ 531] x 100 = 19.77%
Formula
Percentage change = [(636 - 531) / 531] x 100
Subtract the new number by the original number
636 - 531 = 105
105 ÷ 531 = 0.1977401129943503
0.1977401129943503 x 100 = 19.77%