74.15% is the change from 294 to 512
Calculation steps:
[( 512 - 294 ) ÷ 294] x 100 = 74.15%
Formula
Percentage change = [(512 - 294) / 294] x 100
Subtract the new number by the original number
512 - 294 = 218
218 ÷ 294 = 0.7414965986394558
0.7414965986394558 x 100 = 74.15%