64.29% is the change from 504 to 828
Calculation steps:
[( 828 - 504 ) ÷ 504] x 100 = 64.29%
Formula
Percentage change = [(828 - 504) / 504] x 100
Subtract the new number by the original number
828 - 504 = 324
324 ÷ 504 = 0.6428571428571429
0.6428571428571429 x 100 = 64.29%