151.57% is the change from 254 to 639
Calculation steps:
[( 639 - 254 ) ÷ 254] x 100 = 151.57%
Formula
Percentage change = [(639 - 254) / 254] x 100
Subtract the new number by the original number
639 - 254 = 385
385 ÷ 254 = 1.515748031496063
1.515748031496063 x 100 = 151.57%