48.31% is the change from 207 to 307
Calculation steps:
[( 307 - 207 ) ÷ 207] x 100 = 48.31%
Formula
Percentage change = [(307 - 207) / 207] x 100
Subtract the new number by the original number
307 - 207 = 100
100 ÷ 207 = 0.4830917874396135
0.4830917874396135 x 100 = 48.31%