296.12% is the change from 129 to 511
Calculation steps:
[( 511 - 129 ) ÷ 129] x 100 = 296.12%
Formula
Percentage change = [(511 - 129) / 129] x 100
Subtract the new number by the original number
511 - 129 = 382
382 ÷ 129 = 2.9612403100775193
2.9612403100775193 x 100 = 296.12%