105.12% is the change from 254 to 521
Calculation steps:
[( 521 - 254 ) ÷ 254] x 100 = 105.12%
Formula
Percentage change = [(521 - 254) / 254] x 100
Subtract the new number by the original number
521 - 254 = 267
267 ÷ 254 = 1.0511811023622046
1.0511811023622046 x 100 = 105.12%