79.3% is the change from 285 to 511
Calculation steps:
[( 511 - 285 ) ÷ 285] x 100 = 79.3%
Formula
Percentage change = [(511 - 285) / 285] x 100
Subtract the new number by the original number
511 - 285 = 226
226 ÷ 285 = 0.7929824561403509
0.7929824561403509 x 100 = 79.3%