56% is the change from 400 to 624
Calculation steps:
[( 624 - 400 ) ÷ 400] x 100 = 56%
Formula
Percentage change = [(624 - 400) / 400] x 100
Subtract the new number by the original number
624 - 400 = 224
224 ÷ 400 = 0.56
0.56 x 100 = 56%
Example