120.23% is the change from 257 to 566
Calculation steps:
[( 566 - 257 ) ÷ 257] x 100 = 120.23%
Formula
Percentage change = [(566 - 257) / 257] x 100
Subtract the new number by the original number
566 - 257 = 309
309 ÷ 257 = 1.2023346303501945
1.2023346303501945 x 100 = 120.23%