52.42% is the change from 538 to 820
Calculation steps:
[( 820 - 538 ) ÷ 538] x 100 = 52.42%
Formula
Percentage change = [(820 - 538) / 538] x 100
Subtract the new number by the original number
820 - 538 = 282
282 ÷ 538 = 0.5241635687732342
0.5241635687732342 x 100 = 52.42%