51.57% is the change from 541 to 820
Calculation steps:
[( 820 - 541 ) ÷ 541] x 100 = 51.57%
Formula
Percentage change = [(820 - 541) / 541] x 100
Subtract the new number by the original number
820 - 541 = 279
279 ÷ 541 = 0.5157116451016636
0.5157116451016636 x 100 = 51.57%