61.11% is the change from 504 to 812
Calculation steps:
[( 812 - 504 ) ÷ 504] x 100 = 61.11%
Formula
Percentage change = [(812 - 504) / 504] x 100
Subtract the new number by the original number
812 - 504 = 308
308 ÷ 504 = 0.6111111111111112
0.6111111111111112 x 100 = 61.11%