66.6% is the change from 512 to 853
Calculation steps:
[( 853 - 512 ) ÷ 512] x 100 = 66.6%
Formula
Percentage change = [(853 - 512) / 512] x 100
Subtract the new number by the original number
853 - 512 = 341
341 ÷ 512 = 0.666015625
0.666015625 x 100 = 66.6%