135.42% is the change from 271 to 638
Calculation steps:
[( 638 - 271 ) ÷ 271] x 100 = 135.42%
Formula
Percentage change = [(638 - 271) / 271] x 100
Subtract the new number by the original number
638 - 271 = 367
367 ÷ 271 = 1.3542435424354244
1.3542435424354244 x 100 = 135.42%