91.88% is the change from 271 to 520
Calculation steps:
[( 520 - 271 ) ÷ 271] x 100 = 91.88%
Formula
Percentage change = [(520 - 271) / 271] x 100
Subtract the new number by the original number
520 - 271 = 249
249 ÷ 271 = 0.9188191881918819
0.9188191881918819 x 100 = 91.88%