50.28% is the change from 545 to 819
Calculation steps:
[( 819 - 545 ) ÷ 545] x 100 = 50.28%
Formula
Percentage change = [(819 - 545) / 545] x 100
Subtract the new number by the original number
819 - 545 = 274
274 ÷ 545 = 0.5027522935779817
0.5027522935779817 x 100 = 50.28%