87.3% is the change from 512 to 959
Calculation steps:
[( 959 - 512 ) ÷ 512] x 100 = 87.3%
Formula
Percentage change = [(959 - 512) / 512] x 100
Subtract the new number by the original number
959 - 512 = 447
447 ÷ 512 = 0.873046875
0.873046875 x 100 = 87.3%