128.78% is the change from 271 to 620
Calculation steps:
[( 620 - 271 ) ÷ 271] x 100 = 128.78%
Formula
Percentage change = [(620 - 271) / 271] x 100
Subtract the new number by the original number
620 - 271 = 349
349 ÷ 271 = 1.2878228782287824
1.2878228782287824 x 100 = 128.78%