101.18% is the change from 254 to 511
Calculation steps:
[( 511 - 254 ) ÷ 254] x 100 = 101.18%
Formula
Percentage change = [(511 - 254) / 254] x 100
Subtract the new number by the original number
511 - 254 = 257
257 ÷ 254 = 1.0118110236220472
1.0118110236220472 x 100 = 101.18%