300.79% is the change from 127 to 509
Calculation steps:
[( 509 - 127 ) ÷ 127] x 100 = 300.79%
Formula
Percentage change = [(509 - 127) / 127] x 100
Subtract the new number by the original number
509 - 127 = 382
382 ÷ 127 = 3.0078740157480315
3.0078740157480315 x 100 = 300.79%