21.96% is the change from 542 to 661
Calculation steps:
[( 661 - 542 ) ÷ 542] x 100 = 21.96%
Formula
Percentage change = [(661 - 542) / 542] x 100
Subtract the new number by the original number
661 - 542 = 119
119 ÷ 542 = 0.21955719557195572
0.21955719557195572 x 100 = 21.96%