17.3% is the change from 549 to 644
Calculation steps:
[( 644 - 549 ) ÷ 549] x 100 = 17.3%
Formula
Percentage change = [(644 - 549) / 549] x 100
Subtract the new number by the original number
644 - 549 = 95
95 ÷ 549 = 0.17304189435336975
0.17304189435336975 x 100 = 17.3%