18.7% is the change from 540 to 641
Calculation steps:
[( 641 - 540 ) ÷ 540] x 100 = 18.7%
Formula
Percentage change = [(641 - 540) / 540] x 100
Subtract the new number by the original number
641 - 540 = 101
101 ÷ 540 = 0.18703703703703703
0.18703703703703703 x 100 = 18.7%