69.7% is the change from 297 to 504
Calculation steps:
[( 504 - 297 ) ÷ 297] x 100 = 69.7%
Formula
Percentage change = [(504 - 297) / 297] x 100
Subtract the new number by the original number
504 - 297 = 207
207 ÷ 297 = 0.696969696969697
0.696969696969697 x 100 = 69.7%