50.46% is the change from 545 to 820
Calculation steps:
[( 820 - 545 ) ÷ 545] x 100 = 50.46%
Formula
Percentage change = [(820 - 545) / 545] x 100
Subtract the new number by the original number
820 - 545 = 275
275 ÷ 545 = 0.5045871559633027
0.5045871559633027 x 100 = 50.46%