92.75% is the change from 331 to 638
Calculation steps:
[( 638 - 331 ) ÷ 331] x 100 = 92.75%
Formula
Percentage change = [(638 - 331) / 331] x 100
Subtract the new number by the original number
638 - 331 = 307
307 ÷ 331 = 0.9274924471299094
0.9274924471299094 x 100 = 92.75%