48.45% is the change from 549 to 815
Calculation steps:
[( 815 - 549 ) ÷ 549] x 100 = 48.45%
Formula
Percentage change = [(815 - 549) / 549] x 100
Subtract the new number by the original number
815 - 549 = 266
266 ÷ 549 = 0.48451730418943534
0.48451730418943534 x 100 = 48.45%