50.56% is the change from 538 to 810
Calculation steps:
[( 810 - 538 ) ÷ 538] x 100 = 50.56%
Formula
Percentage change = [(810 - 538) / 538] x 100
Subtract the new number by the original number
810 - 538 = 272
272 ÷ 538 = 0.5055762081784386
0.5055762081784386 x 100 = 50.56%