21.77% is the change from 542 to 660
Calculation steps:
[( 660 - 542 ) ÷ 542] x 100 = 21.77%
Formula
Percentage change = [(660 - 542) / 542] x 100
Subtract the new number by the original number
660 - 542 = 118
118 ÷ 542 = 0.2177121771217712
0.2177121771217712 x 100 = 21.77%