66.34% is the change from 303 to 504
Calculation steps:
[( 504 - 303 ) ÷ 303] x 100 = 66.34%
Formula
Percentage change = [(504 - 303) / 303] x 100
Subtract the new number by the original number
504 - 303 = 201
201 ÷ 303 = 0.6633663366336634
0.6633663366336634 x 100 = 66.34%