91.02% is the change from 512 to 978
Calculation steps:
[( 978 - 512 ) ÷ 512] x 100 = 91.02%
Formula
Percentage change = [(978 - 512) / 512] x 100
Subtract the new number by the original number
978 - 512 = 466
466 ÷ 512 = 0.91015625
0.91015625 x 100 = 91.02%