53.29% is the change from 638 to 978
Calculation steps:
[( 978 - 638 ) ÷ 638] x 100 = 53.29%
Formula
Percentage change = [(978 - 638) / 638] x 100
Subtract the new number by the original number
978 - 638 = 340
340 ÷ 638 = 0.5329153605015674
0.5329153605015674 x 100 = 53.29%