78.91% is the change from 512 to 916
Calculation steps:
[( 916 - 512 ) ÷ 512] x 100 = 78.91%
Formula
Percentage change = [(916 - 512) / 512] x 100
Subtract the new number by the original number
916 - 512 = 404
404 ÷ 512 = 0.7890625
0.7890625 x 100 = 78.91%