61.92% is the change from 344 to 557
Calculation steps:
[( 557 - 344 ) ÷ 344] x 100 = 61.92%
Formula
Percentage change = [(557 - 344) / 344] x 100
Subtract the new number by the original number
557 - 344 = 213
213 ÷ 344 = 0.6191860465116279
0.6191860465116279 x 100 = 61.92%