50.27% is the change from 555 to 834
Calculation steps:
[( 834 - 555 ) ÷ 555] x 100 = 50.27%
Formula
Percentage change = [(834 - 555) / 555] x 100
Subtract the new number by the original number
834 - 555 = 279
279 ÷ 555 = 0.5027027027027027
0.5027027027027027 x 100 = 50.27%