271.6% is the change from 81 to 301
Calculation steps:
[( 301 - 81 ) ÷ 81] x 100 = 271.6%
Formula
Percentage change = [(301 - 81) / 81] x 100
Subtract the new number by the original number
301 - 81 = 220
220 ÷ 81 = 2.7160493827160495
2.7160493827160495 x 100 = 271.6%