91.54% is the change from 272 to 521
Calculation steps:
[( 521 - 272 ) ÷ 272] x 100 = 91.54%
Formula
Percentage change = [(521 - 272) / 272] x 100
Subtract the new number by the original number
521 - 272 = 249
249 ÷ 272 = 0.9154411764705882
0.9154411764705882 x 100 = 91.54%