62.89% is the change from 512 to 834
Calculation steps:
[( 834 - 512 ) ÷ 512] x 100 = 62.89%
Formula
Percentage change = [(834 - 512) / 512] x 100
Subtract the new number by the original number
834 - 512 = 322
322 ÷ 512 = 0.62890625
0.62890625 x 100 = 62.89%