91.6% is the change from 512 to 981
Calculation steps:
[( 981 - 512 ) ÷ 512] x 100 = 91.6%
Formula
Percentage change = [(981 - 512) / 512] x 100
Subtract the new number by the original number
981 - 512 = 469
469 ÷ 512 = 0.916015625
0.916015625 x 100 = 91.6%