21.22% is the change from 542 to 657
Calculation steps:
[( 657 - 542 ) ÷ 542] x 100 = 21.22%
Formula
Percentage change = [(657 - 542) / 542] x 100
Subtract the new number by the original number
657 - 542 = 115
115 ÷ 542 = 0.21217712177121772
0.21217712177121772 x 100 = 21.22%