39.04% is the change from 584 to 812
Calculation steps:
[( 812 - 584 ) ÷ 584] x 100 = 39.04%
Formula
Percentage change = [(812 - 584) / 584] x 100
Subtract the new number by the original number
812 - 584 = 228
228 ÷ 584 = 0.3904109589041096
0.3904109589041096 x 100 = 39.04%