6.85% is the change from 584 to 624
Calculation steps:
[( 624 - 584 ) ÷ 584] x 100 = 6.85%
Formula
Percentage change = [(624 - 584) / 584] x 100
Subtract the new number by the original number
624 - 584 = 40
40 ÷ 584 = 0.0684931506849315
0.0684931506849315 x 100 = 6.85%