78.83% is the change from 307 to 549
Calculation steps:
[( 549 - 307 ) ÷ 307] x 100 = 78.83%
Formula
Percentage change = [(549 - 307) / 307] x 100
Subtract the new number by the original number
549 - 307 = 242
242 ÷ 307 = 0.7882736156351792
0.7882736156351792 x 100 = 78.83%