54.7% is the change from 638 to 987
Calculation steps:
[( 987 - 638 ) ÷ 638] x 100 = 54.7%
Formula
Percentage change = [(987 - 638) / 638] x 100
Subtract the new number by the original number
987 - 638 = 349
349 ÷ 638 = 0.5470219435736677
0.5470219435736677 x 100 = 54.7%