50.45% is the change from 557 to 838
Calculation steps:
[( 838 - 557 ) ÷ 557] x 100 = 50.45%
Formula
Percentage change = [(838 - 557) / 557] x 100
Subtract the new number by the original number
838 - 557 = 281
281 ÷ 557 = 0.5044883303411131
0.5044883303411131 x 100 = 50.45%