66.41% is the change from 512 to 852
Calculation steps:
[( 852 - 512 ) ÷ 512] x 100 = 66.41%
Formula
Percentage change = [(852 - 512) / 512] x 100
Subtract the new number by the original number
852 - 512 = 340
340 ÷ 512 = 0.6640625
0.6640625 x 100 = 66.41%