67.46% is the change from 504 to 844
Calculation steps:
[( 844 - 504 ) ÷ 504] x 100 = 67.46%
Formula
Percentage change = [(844 - 504) / 504] x 100
Subtract the new number by the original number
844 - 504 = 340
340 ÷ 504 = 0.6746031746031746
0.6746031746031746 x 100 = 67.46%