71.96% is the change from 296 to 509
Calculation steps:
[( 509 - 296 ) ÷ 296] x 100 = 71.96%
Formula
Percentage change = [(509 - 296) / 296] x 100
Subtract the new number by the original number
509 - 296 = 213
213 ÷ 296 = 0.7195945945945946
0.7195945945945946 x 100 = 71.96%