72.39% is the change from 297 to 512
Calculation steps:
[( 512 - 297 ) ÷ 297] x 100 = 72.39%
Formula
Percentage change = [(512 - 297) / 297] x 100
Subtract the new number by the original number
512 - 297 = 215
215 ÷ 297 = 0.7239057239057239
0.7239057239057239 x 100 = 72.39%