78.5% is the change from 307 to 548
Calculation steps:
[( 548 - 307 ) ÷ 307] x 100 = 78.5%
Formula
Percentage change = [(548 - 307) / 307] x 100
Subtract the new number by the original number
548 - 307 = 241
241 ÷ 307 = 0.7850162866449512
0.7850162866449512 x 100 = 78.5%