21.28% is the change from 545 to 661
Calculation steps:
[( 661 - 545 ) ÷ 545] x 100 = 21.28%
Formula
Percentage change = [(661 - 545) / 545] x 100
Subtract the new number by the original number
661 - 545 = 116
116 ÷ 545 = 0.21284403669724772
0.21284403669724772 x 100 = 21.28%