56.43% is the change from 638 to 998
Calculation steps:
[( 998 - 638 ) ÷ 638] x 100 = 56.43%
Formula
Percentage change = [(998 - 638) / 638] x 100
Subtract the new number by the original number
998 - 638 = 360
360 ÷ 638 = 0.5642633228840125
0.5642633228840125 x 100 = 56.43%