72.96% is the change from 307 to 531
Calculation steps:
[( 531 - 307 ) ÷ 307] x 100 = 72.96%
Formula
Percentage change = [(531 - 307) / 307] x 100
Subtract the new number by the original number
531 - 307 = 224
224 ÷ 307 = 0.7296416938110749
0.7296416938110749 x 100 = 72.96%