50.37% is the change from 538 to 809
Calculation steps:
[( 809 - 538 ) ÷ 538] x 100 = 50.37%
Formula
Percentage change = [(809 - 538) / 538] x 100
Subtract the new number by the original number
809 - 538 = 271
271 ÷ 538 = 0.5037174721189591
0.5037174721189591 x 100 = 50.37%
Example