47.46% is the change from 512 to 755
Calculation steps:
[( 755 - 512 ) ÷ 512] x 100 = 47.46%
Formula
Percentage change = [(755 - 512) / 512] x 100
Subtract the new number by the original number
755 - 512 = 243
243 ÷ 512 = 0.474609375
0.474609375 x 100 = 47.46%