8.5% is the change from 506 to 549
Calculation steps:
[( 549 - 506 ) ÷ 506] x 100 = 8.5%
Formula
Percentage change = [(549 - 506) / 506] x 100
Subtract the new number by the original number
549 - 506 = 43
43 ÷ 506 = 0.08498023715415019
0.08498023715415019 x 100 = 8.5%