54.71% is the change from 223 to 345
Calculation steps:
[( 345 - 223 ) ÷ 223] x 100 = 54.71%
Formula
Percentage change = [(345 - 223) / 223] x 100
Subtract the new number by the original number
345 - 223 = 122
122 ÷ 223 = 0.547085201793722
0.547085201793722 x 100 = 54.71%