70.51% is the change from 512 to 873
Calculation steps:
[( 873 - 512 ) ÷ 512] x 100 = 70.51%
Formula
Percentage change = [(873 - 512) / 512] x 100
Subtract the new number by the original number
873 - 512 = 361
361 ÷ 512 = 0.705078125
0.705078125 x 100 = 70.51%