38.42% is the change from 557 to 771
Calculation steps:
[( 771 - 557 ) ÷ 557] x 100 = 38.42%
Formula
Percentage change = [(771 - 557) / 557] x 100
Subtract the new number by the original number
771 - 557 = 214
214 ÷ 557 = 0.38420107719928187
0.38420107719928187 x 100 = 38.42%