21.73% is the change from 543 to 661
Calculation steps:
[( 661 - 543 ) ÷ 543] x 100 = 21.73%
Formula
Percentage change = [(661 - 543) / 543] x 100
Subtract the new number by the original number
661 - 543 = 118
118 ÷ 543 = 0.21731123388581952
0.21731123388581952 x 100 = 21.73%